By the Lee Brothers and childhood best friend Jeff Kim at Pixlcat Coffee & Butter Mochi — the first butter mochi café in the United States, baking seven flavors fresh every morning in San Francisco and Boston.
Yes — butter mochi is naturally gluten-free. It always has been. The recipe was never designed around wheat flour, so there’s nothing to substitute, nothing to work around, and no compromise in taste or texture. Butter mochi is one of the rare desserts that is gluten-free by nature, not by modification. If you’re new to it, read our complete guide to butter mochi → /what-is-butter-mochi/
Why Butter Mochi Is Gluten Free
Butter mochi is made with mochiko, which is glutinous rice flour — sweet rice that’s been milled into a fine powder. The name trips people up: “glutinous” sounds like it should contain gluten, but it doesn’t. The word refers to the sticky, glue-like texture of the rice when it’s cooked, not to the protein gluten found in wheat, barley, and rye.
Mochiko contains zero gluten. It’s pure rice flour. The other core ingredients in traditional butter mochi — butter, coconut milk, sugar, and eggs — are also naturally gluten-free. The entire recipe, from the original Hawaiian potluck version to the seven flavors we bake at Pixlcat, has always been gluten-free without anyone needing to make it that way.
This is what makes butter mochi different from most gluten-free baked goods. There’s no almond flour standing in for all-purpose flour. No xanthan gum trying to replicate the structure that gluten provides. No rice flour blend attempting to mimic what wheat does naturally. Butter mochi was built on rice flour from the beginning — the chew, the density, the texture are all features of the recipe, not compromises made to avoid gluten.
What About the Word “Glutinous”?
This is the most common question we get, and it’s a fair one. “Glutinous rice flour” genuinely sounds like it should contain gluten. But the terminology predates modern understanding of gluten as a protein.
“Glutinous” in this context means “sticky” or “glue-like.” When glutinous rice is cooked, it becomes exceptionally sticky compared to regular rice — that’s the quality the name describes. The protein gluten, which is found in wheat, barley, rye, and their derivatives, is a completely different substance. Glutinous rice contains none of it.
If you have celiac disease or a medically diagnosed gluten sensitivity, the key fact is this: mochiko is made from rice and only rice. It is naturally free of gluten proteins. The Celiac Disease Foundation and other major health organizations confirm that glutinous rice is safe for people who cannot consume gluten.
Are All Butter Mochi Flavors Gluten Free?
At Pixlcat, yes — all seven of our butter mochi flavors are naturally gluten-free:
Classic — Butter, coconut milk, vanilla. The original.
Chocolate — Rich cocoa folded into the mochi batter.
Matcha — Ceremonial-grade Uji matcha from Japan.
Ube White Chocolate — Purple yam with white chocolate. Our bestseller.
Black Sesame — Toasted black sesame ground into the batter.
S’more — Classic base with cinnamon, chocolate chunks, and torched meringue. No actual graham cracker — the cinnamon creates the graham flavor. No actual marshmallow — the torched meringue mimics the charred marshmallow taste.
Breakfast — Bacon and cheddar folded into the mochi batter.
If you have specific allergen questions about any flavor, our team at the counter is happy to walk you through the full ingredient list.
A Note on Cross-Contamination
Pixlcat is not a dedicated gluten-free facility. Our kitchen handles other ingredients and products that may contain gluten. While our butter mochi recipes are gluten-free by formulation, we cannot guarantee a completely gluten-free environment.
If you have celiac disease or a severe gluten allergy, we want you to have the information you need to make the right decision for your health. Please ask our team about our kitchen practices when you visit.
For people avoiding gluten by choice or managing a mild sensitivity, our butter mochi is made entirely without gluten-containing ingredients and is a naturally gluten-free option you can feel good about.
Why This Matters
Roughly one in six American households actively avoids gluten — whether due to celiac disease, non-celiac gluten sensitivity, or personal dietary preference. For these customers, finding a dessert that tastes like a real dessert, not a gluten-free approximation, is rare.
Butter mochi doesn’t taste “gluten-free.” It doesn’t have that telltale dryness or crumbliness that plagues most GF baked goods. It’s dense, chewy, rich, and satisfying — with caramelized edges and a soft center — because that’s what mochiko naturally produces. The texture isn’t a workaround. It’s the whole point.
At Pixlcat, we bake seven flavors fresh every morning. Every one of them is naturally gluten-free. Paired with a latte or a matcha, it’s one of the best gluten-free dessert experiences in San Francisco or Boston — not because we engineered it that way, but because butter mochi has always been this way.
Order Naturally Gluten-Free Butter Mochi Online
Pixlcat now ships butter mochi nationwide from Boston via UPS ground, Monday through Wednesday. Order at pixlcatbuttermochi.com. Build-Your-Own 6-piece boxes start at $39 — pick any combination of Classic, Chocolate, Matcha, Ube White Chocolate, Black Sesame, and S’mores. Assorted 6/12/18-piece boxes also available ($39 / $78 / $117). Every flavor is naturally gluten-free. Order by Wednesday, enjoy by the weekend.
Where to Find Naturally Gluten-Free Butter Mochi
San Francisco — Clement Street (Inner Richmond)
519 Clement Street, San Francisco, CA 94118
Mon–Fri 7:00 AM – 4:00 PM, Sat–Sun 7:00 AM – 5:00 PM
Boston — Charlestown
32 Cambridge Street, Charlestown, MA 02129
Mon–Fri 8:00 AM – 3:00 PM, Sat–Sun 8:00 AM – 3:30 PM
San Francisco — Ferry Building Saturday Market
Every Saturday at the Ferry Building Farmers Market.
Gift boxes available — 3-piece ($15) and 6-piece tasting box ($29) in San Francisco. Boston gift box pricing based on individual mochi selection.
Follow us on Instagram at @pixlcatcoffee and @pxlbuttermochi.
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