Butter mochi is a Hawaiian dessert made from mochiko (glutinous rice flour), coconut milk, butter, sugar, and eggs. It is known for its chewy texture and is a staple of Hawaiian local cuisine. Unlike traditional Japanese mochi, butter mochi is baked rather than pounded, giving it a dense, cake-like structure with a uniquely chewy texture.
Butter mochi at a glance
- Origin: Hawaii (Hawaiian dessert)
- Texture: Chewy, dense
- Base ingredient: Mochiko (glutinous rice flour)
- Gluten-free: Yes
- Cooking method: Baked
Written by By the Lee Brothers at Pixlcat Coffee & Butter Mochi— the first butter mochi café in the United States, specializing in Hawaiian-style butter mochi.
Here’s a quick overview before we go deeper:
In this guide:
- What butter mochi is
- What it tastes like
- What it’s made of
- Where it comes from
- Whether it’s gluten-free
- How it compares to mochi
We’re the Lee brothers — Dennis, David, and Daniel — along with our childhood best friend Jeff Kim. We bake seven flavors of butter mochi fresh every morning at Pixlcat Coffee in San Francisco and Boston.
Most people on the mainland have never heard of butter mochi. In Hawaii, it’s a different story. Butter mochi is one of the most beloved desserts on the islands — the thing that disappears first at every potluck, bake sale, and family gathering. It has been a staple of Hawaiian home cooking for generations, passed from kitchen to kitchen long before it ever appeared in bakery cases.
Before Pixlcat, we spent nearly a decade running Namu Gaji in San Francisco, a restaurant the San Francisco Chronicle once called “the city’s most representative restaurant.” We operated a two-acre farm in Sunol and cooked food influenced by Korean, Japanese, and Californian traditions. When Namu Gaji closed in 2021 after nine years, we carried twenty years of professional cooking into a new format: Pixlcat Coffee — built around butter mochi and specialty coffee.
This guide explains everything we know about butter mochi: what it is, where it comes from, why it tastes the way it does, and why it pairs better with coffee than almost anything else in a bakery case.
Butter Mochi — Quick Definition
Butter mochi is a baked Hawaiian dessert made with mochiko (glutinous rice flour), butter, coconut milk, sugar, and eggs. It is known for its dense, chewy texture and crisp caramelized edges.
For a full comparison within the butter mochi category, read our guide: Butter Mochi vs Mochi Donuts.
In This Guide
- Butter Mochi — Quick Definition
- What Is Butter Mochi?
- What Is Butter Mochi Made Of?
- The Origins: From Japanese Mochi to Hawaiian Potlucks
- Butter Mochi vs Other Mochi Desserts
- What Does Butter Mochi Taste Like?
- Is Butter Mochi Gluten Free?
- How to Store and Enjoy Butter Mochi
- Why Butter Mochi Pairs Especially Well With Coffee
- How to Pair Each Flavor With Coffee: A Barista’s Guide
- Pixlcat’s Seven Flavors
- Where to Find Pixlcat Butter Mochi
- Butter Mochi FAQ
What Is Butter Mochi?
Butter mochi is a baked Hawaiian dessert made from mochiko (glutinous rice flour), butter, coconut milk, sugar, and eggs. It’s dense, chewy, sweet, and rich — with crispy golden edges and a soft, almost custard-like center.
It’s not a cake. It’s not a brownie. It’s not a cookie. It doesn’t fit neatly into any existing bakery category, which is part of what makes it special — and part of why so few people outside Hawaii know about it.
The texture is the thing people remember. When you bite into butter mochi, there’s a chew — a gentle pull that lives somewhere between the softness of cake and the stretch of traditional Japanese mochi. That chew comes from the glutinous rice flour, which creates an elastic, cohesive structure completely unlike anything wheat flour can produce. No crumbs. No dryness. Just a clean, satisfying bite that’s unlike any other dessert you’ve had.
What Is Butter Mochi Made Of?
The ingredient list for butter mochi is short and simple — which is part of what makes it so good and so naturally free of common allergens.
The base is mochiko, a Japanese glutinous rice flour made from short-grain sweet rice. This is the ingredient that gives butter mochi its chew. No other flour can replicate it — regular rice flour, tapioca starch, and wheat flour all produce completely different textures. Mochiko is the non-negotiable foundation.
From there: unsalted butter for richness, full-fat coconut milk for tropical sweetness, sugar, eggs, and a small amount of baking powder to give the interior a slight lift while keeping the density. Vanilla extract rounds out the base flavor.
That’s the classic recipe — six or seven ingredients, no obscure additions, nothing you can’t find at a well-stocked grocery store. The simplicity is the point. Butter mochi doesn’t hide behind complexity. It relies on the quality of a few ingredients working together.
At Pixlcat, our seven flavors build on this base with additional ingredients specific to each variant — ceremonial Uji matcha from Japan, toasted black sesame, ube (purple yam from the Philippines), Guittard chocolate, and housemade syrups. The Breakfast mochi adds bacon and cheddar. The S’more gets cinnamon, chocolate chunks, and a torched meringue top. But every flavor starts from the same mochiko-butter-coconut foundation.
One note on “glutinous”: the word trips people up constantly. Glutinous rice flour contains zero gluten. The name refers to the glue-like stickiness of the rice when cooked, not the gluten protein found in wheat, barley, and rye. Every ingredient in our butter mochi is naturally gluten-free.
The Origins: From Japanese Mochi to Hawaiian Potlucks
Butter mochi traces its roots to multiple traditions that converged in Hawaii. The foundation is Japanese mochi — pounded glutinous rice that has been part of Japanese food culture for centuries. But the story doesn’t end there. Hawaii’s plantation era brought together workers from Japan, the Philippines, Portugal, and elsewhere, and their food traditions blended in ways that created something entirely new.
Portuguese immigrants brought a baking tradition built on butter, eggs, and sweetness — think malasadas and sweet bread, which became Hawaiian staples in their own right. Filipino culture contributed bibingka, a coconut milk rice cake baked in banana leaves that shares a striking resemblance to butter mochi in both ingredients and texture. Japanese mochi technique, Portuguese butter-and-egg richness, Filipino coconut rice cakes — butter mochi sits at the intersection of all three.
Somewhere along the way, someone had the idea to bake mochiko batter in a pan with butter and coconut milk instead of steaming or pounding it. The result was something that belonged to none of these traditions individually and all of them collectively: a dessert with the distinctive chew of mochi, the buttery richness of Portuguese baking, and the coconut sweetness of Filipino bibingka. You could cut it into squares, bring it to a party, eat it at room temperature, and it would taste just as good hours later.
That’s how butter mochi became a fixture of Hawaiian home cooking — not through restaurants or food media, but through families and communities sharing recipes over decades. Every family has their version. Every island has its preferences. The tradition is deep and personal in a way that most mainland desserts aren’t.
It’s also important to distinguish butter mochi from other mochi-style products you might have encountered. Mochi ice cream — the frozen treat wrapped in a thin mochi skin — is a completely different product. Mochi donuts, which have become popular at shops across the country, use a fried format with tapioca starch blends. Mochi muffins are another variation. Butter mochi is its own thing: baked, not fried or frozen, with a texture and flavor profile that belongs to Hawaii.
Butter Mochi vs Other Mochi Desserts
| Dessert | Preparation | Texture |
|---|---|---|
| Butter Mochi | baked | dense and chewy |
| Mochi Donuts | fried | airy and chewy |
| Mochi Ice Cream | frozen | soft mochi wrapped around ice cream |
For a deeper comparison, read our guide: Butter Mochi vs Mochi Donuts.
What Does Butter Mochi Taste Like?
The flavor depends on the recipe and the flavor variant, but traditional butter mochi hits a few consistent notes: buttery richness from real butter, tropical sweetness from coconut milk, a subtle vanilla warmth, and the clean taste of rice flour — lighter and less wheaty than anything made with standard flour.
But the texture is what truly sets it apart. Imagine biting into something with the density of a brownie but the chew of a gummy bear, with edges that have gone golden and slightly crispy from the oven. The center is soft, almost pudding-like. The edges are the prize — slightly caramelized, with a bit of crunch that gives way to that signature pull.
Three properties make butter mochi’s texture commercially exceptional, and they’re all related to the glutinous rice flour base:
- Moisture retention. Coconut milk and butter create a fat-and-liquid system that the starch matrix traps effectively. Butter mochi holds moisture exceptionally well for 48 to 72 hours at room temperature.
- Density. Butter mochi is a low-volume, high-mass product that packs well, displays well under glass, and doesn’t visually deflate like many risen pastries.
- Consistency. There’s no gluten network to over-develop and no leavening to under-perform. Batch-to-batch variation is minimal.
Is Butter Mochi Gluten Free?
Yes — naturally and completely. Butter mochi is made with mochiko, which is glutinous rice flour. The name is confusing: “glutinous” refers to the sticky, glue-like texture of the rice when cooked, not to the protein gluten found in wheat, barley, and rye.
There is zero gluten in mochiko. Zero gluten in butter mochi. It’s one of the rare desserts that is naturally gluten-free without any substitutions, workarounds, or compromises.
At Pixlcat, all seven of our butter mochi flavors are naturally gluten-free, baked fresh every morning. If you have questions about allergens or ingredients for any specific flavor, our team at the counter can walk you through it.
Read more: Is Butter Mochi Gluten Free?
How to Store and Enjoy Butter Mochi
Butter mochi is delicious every way you eat it. For the best experience, we recommend enjoying it cold or at room temperature — colder equals chewier, which is part of the fun. The Breakfast mochi is the exception: it’s great toasted.
For the best texture, enjoy your butter mochi within three days or keep it frozen. You can store it in the refrigerator for up to four days for optimal texture, or freeze for up to two months.
To reheat from the freezer or refrigerator: microwave for 15 seconds on high. Then let it sit at room temperature for about 8 minutes to even out, or go straight to a toaster for about 4 minutes after microwaving. The toaster step brings back the crispy caramelized edges.
Two exceptions: our Breakfast butter mochi (bacon and cheddar) and S’more are best eaten within six hours if not refrigerated. If refrigerated, the microwave-to-toaster method brings them back well.
We also offer gift boxes — a 3-piece box ($15) and a 6-piece tasting box ($29) at our San Francisco locations, perfect for trying multiple flavors or sending to someone who’s never experienced butter mochi. Gift boxes are also available in Boston with pricing based on individual mochi selection. Now shipping nationwide — BYO 6-piece boxes ($39), 12-piece ($78), and Assorted 6/12/18-piece boxes ($39/$78/$117) at pixlcatbuttermochi.com. For larger orders, we offer catering for corporate events, office deliveries, and private parties — contact us directly to build a custom butter mochi order for your group.
Why Butter Mochi Pairs Especially Well With Coffee
This is something we discovered early and it’s become central to how we think about our menu. Of all the things you could eat alongside a cup of specialty coffee, butter mochi is one of the best.
The pairing works along three axes:
- Bitterness contrast. Coffee’s roast-driven bitterness counterbalances the sweetness and coconut richness of butter mochi.
- Texture counterpoint. The chew of mochi provides a physical contrast to a liquid beverage, extending the experience.
- Temperature complementarity. Mochi served cold or at room temperature complements hot coffee rather than competing with it.
We see this in our sales data every day. The latte paired with a piece of butter mochi is our most popular order combination. It’s not an accident.
Read more: Butter Mochi Coffee Pairing Guide
How to Pair Each Flavor With Coffee: A Barista’s Guide
At Pixlcat, we serve Four Barrel Coffee’s Friendo Blendo espresso — a blend we chose specifically because its chocolate and caramel notes play well with the sweetness profile of butter mochi. Here’s how we’d pair each of our seven flavors.
- Classic × Espresso or Drip Coffee. The original butter mochi is best with a straightforward coffee that lets the mochi shine.
- Chocolate × Mocha. Chocolate on chocolate, balanced by espresso bitterness.
- Matcha × Iced Americano. Clean, sharp coffee keeps flavors distinct.
- Ube White Chocolate × Vanilla Oat Latte. Creamy and light enough to let ube come through.
- Black Sesame × Pour-Over. Cleaner extraction highlights toasted sesame aromatics.
- S’more × Cortado. Strong enough to cut sweetness, small enough to match intensity.
- Breakfast × Drip Coffee. Savory mochi pairs like a true breakfast item with black coffee.
If you’re new to butter mochi and coffee pairings, start with the Classic and an espresso. Once you understand the base pairing, try the Ube White Chocolate with an oat latte. Those two will tell you everything you need to know.
Pixlcat’s Seven Flavors
We bake seven core flavors of butter mochi fresh every morning at both our San Francisco and Boston locations:
- Classic — butter, coconut milk, vanilla.
- Chocolate — rich cocoa folded into the batter.
- Matcha — ceremonial-grade Uji matcha from Japan.
- Ube White Chocolate — our bestseller, sweet and nutty with white chocolate richness.
- Black Sesame — toasted, nutty, savory-sweet.
- S’more — cinnamon + chocolate chunks + torched meringue top.
- Breakfast — bacon and cheddar folded into the batter.
Where to Find Pixlcat Butter Mochi
San Francisco — Clement Street (Inner Richmond)
519 Clement Street, San Francisco, CA 94118
Open daily — Mon–Fri 7:00 AM – 4:00 PM, Sat–Sun 7:00 AM – 5:00 PM
All seven flavors baked fresh every morning. Four Barrel specialty coffee.
Boston — Charlestown
32 Cambridge Street, Charlestown, MA 02129 (across from Sullivan Station)
Mon–Fri 8:00 AM – 3:00 PM, Sat–Sun 8:00 AM – 3:30 PM
Full mochi menu plus George Howell specialty coffee.
San Francisco — Ferry Building Saturday Market
Every Saturday at the Ferry Building Farmers Market.
Read: Butter Mochi in San Francisco & Butter Mochi in Boston.
Now shipping nationwide from Boston — UPS ground Mon–Wed at pixlcatbuttermochi.com. BYO 6-piece boxes start at $39. Follow us on Instagram at @pixlcatcoffee and @pxlbuttermochi for daily updates.
The Short Version
Butter mochi is a baked Hawaiian dessert made with glutinous rice flour, butter, and coconut milk. It’s chewy, sweet, rich, and naturally gluten-free — with crispy caramelized edges and a soft, almost custard-like center.
It pairs remarkably well with coffee. Pixlcat Coffee specializes in butter mochi, baking seven flavors fresh every morning in San Francisco and Boston.
Come try one. Start with the Classic or the Ube White Chocolate. Get a latte with it.
You’ll understand.
BUTTER MOCHI FAQ
Butter mochi originated in Hawaii, where it emerged from the blending of multiple cultural traditions during the plantation era. Japanese immigrants brought mochi-making techniques using glutinous rice flour. Filipino culture contributed bibingka, a coconut milk rice cake baked in banana leaves. Portuguese immigrants brought butter-and-egg baking traditions. Butter mochi sits at the intersection of all three — a baked dessert with the chew of Japanese mochi, the richness of Portuguese baking, and the coconut sweetness of Filipino bibingka.
Butter mochi has a buttery richness, tropical sweetness from coconut milk, and subtle vanilla warmth. The texture is what most people remember — dense like a brownie but chewy like mochi, with crispy caramelized edges and a soft, almost pudding-like center. It’s lighter and less wheaty than anything made with standard flour. The rice flour base gives it a clean taste that lets the butter and coconut flavors come through clearly.
Butter mochi is baked in a pan and made with mochiko (glutinous rice flour), butter, and coconut milk. Mochi donuts are fried and typically use tapioca starch blends. Mochi ice cream is a frozen treat wrapped in thin mochi skin. Mochi muffins are yet another variation. Butter mochi is its own thing — baked, not fried or frozen, with a texture and flavor profile unique to Hawaii.
Pixlcat Coffee bakes seven flavors of butter mochi fresh every morning: Classic (butter, coconut milk, vanilla), Chocolate (rich cocoa folded into the batter), Matcha (ceremonial-grade Uji matcha from Japan), Ube White Chocolate (purple yam with white chocolate — the bestseller), Black Sesame (toasted, nutty, savory-sweet), S’more (cinnamon, chocolate chunks, torched meringue), and Breakfast (bacon and cheddar).
For the best texture, enjoy butter mochi within three days or keep it frozen. Store in the refrigerator for up to 4 days for optimal texture, or freeze for up to 2 months. To reheat from the freezer or refrigerator: microwave 15 seconds on high, then let sit at room temperature for 8 minutes to even out, or go straight to a toaster for 4 minutes. Enjoy butter mochi cold or at room temperature — colder means chewier. Breakfast and S’more flavors should be eaten within 6 hours if not refrigerated.
Pixlcat Coffee serves fresh butter mochi daily at three locations: 519 Clement Street in San Francisco’s Inner Richmond, 32 Cambridge Street in Charlestown, Boston (steps from Sullivan Station), and the Ferry Building Saturday Farmers Market in San Francisco. Cafe gift boxes available in 3-piece ($15) and 6-piece ($29) sizes. Pixlcat ships butter mochi nationwide from Boston via UPS ground (Mon–Wed) — order at pixlcatbuttermochi.com. BYO 6-piece boxes start at $39.
Yes. In-cafe gift boxes are available in 3-piece ($15) and 6-piece ($29) sizes in San Francisco, with Boston pricing based on flavor selection. For nationwide shipping, order at pixlcatbuttermochi.com — BYO 6-piece ($39), 12-piece ($78), and Assorted 6/12/18-piece boxes ($39/$78/$117). UPS ground from Boston, Mon–Wed. For larger orders, Pixlcat provides catering for corporate events, office deliveries, and private parties — contact directly to build a custom order.