Glutinous rice flour is a fine, white powder made from short-grain sticky rice (also called sweet rice). Despite its name, it contains no gluten whatsoever. The word “glutinous” refers to the glue-like, sticky texture the flour develops when cooked. It’s a staple ingredient across East and Southeast Asian cooking, prized for creating the distinctly chewy, stretchy texture in foods like mochi, rice dumplings, and rice cakes.
Why It’s So Sticky
All rice contains two types of starch: amylose and amylopectin. Regular rice varieties contain 15% to 26% amylose, which produces firmer, more structured results when cooked. Glutinous rice contains almost none, just about 1.5% amylose, with the remaining starch being nearly all amylopectin. Amylopectin is a highly branched starch molecule that traps water and creates elasticity. This is what gives glutinous rice flour its signature gooey, stretchy quality when heated.
When raw, glutinous rice flour looks identical to regular rice flour: soft, white, and powdery. The difference only becomes obvious once you add water and heat. Regular rice flour behaves more like wheat flour and produces a cake-like consistency. Glutinous rice flour turns gooey, stretchy, and sticky, almost like slime. That transformation is entirely due to the amylopectin-heavy starch profile.
It’s Completely Gluten-Free
This is the single most common point of confusion. Gluten is a protein found in wheat, barley, and rye. It’s made up of two specific protein components, gliadin and glutenin, that form an elastic network during bread-making. Rice contains neither of these proteins. Glutinous rice flour is naturally gluten-free, hypoallergenic, and easily digestible, making it a go-to ingredient in gluten-free cooking. The misleading name simply describes the flour’s sticky behavior, not its protein content.
How It’s Made
Glutinous rice flour is produced through either wet milling or dry milling, and the method matters. Wet milling involves soaking the rice in water, draining it, grinding it with added water, filtering, and then drying the result. This process softens the grains before grinding, which produces the finest particles with smooth, well-defined edges and minimal damage to the starch structure. Wet-milled flour retains more of the starch’s natural crystalline structure (about 23% crystallinity, compared to roughly 18% for dry-milled versions), which translates to better texture in the finished product.
Dry milling skips the soaking step and grinds the rice directly, resulting in coarser particles and more damaged starch. For most home cooks, the milling method shows up as a difference between brands and varieties rather than something you control yourself, but it does explain why some glutinous rice flours perform noticeably better than others.
Japanese Varieties: Mochiko vs. Shiratamako
Not all glutinous rice flour is the same. The two most common Japanese varieties highlight how milling changes the final product. Mochiko is dry-milled: the rice is ground while dry, producing a fine powder. Shiratamako is wet-milled: the rice is ground while wet and then dried. In practice, shiratamako produces a softer, stretchier mochi dough that stays pliable even after cooling. Mochiko works well but needs to be shaped while still hot, because it stiffens as it cools.
Thai glutinous rice flour, widely available in most Asian grocery stores, is another common option and works well for a broad range of recipes. The brand and milling method will affect how stretchy or firm your results turn out, so it’s worth experimenting if texture matters to you.
Common Uses in Cooking
Glutinous rice flour is the essential ingredient behind many beloved Asian desserts and snacks. Japanese mochi and dango dumplings rely on it for their characteristic chew. Vietnamese dishes like sticky rice balls in ginger syrup (che troi nuoc) and sticky rice dumplings (banh it tran) depend on the flour’s elasticity. Korean tteokbokki (rice cakes) use it as a base. In all of these, the flour’s stickiness acts as both the binding agent and the source of that satisfying, bouncy texture.
Beyond desserts, glutinous rice flour works as a thickener for sauces, gravies, and soups. Rice starch has notably good freeze-thaw stability compared to some other thickeners, meaning sauces thickened with it hold up better after being frozen and reheated. This makes it useful for meal prepping or any dish that will be stored in the freezer.
You can also mix glutinous rice flour with regular rice flour to fine-tune texture. Replacing about a quarter of the glutinous flour with regular rice flour produces firmer dumplings, which some recipes call for.
Nutrition Profile
Glutinous rice flour is primarily a carbohydrate source. Per 100 grams, it contains roughly 665 calories, about 153 grams of carbohydrates, 10 grams of protein, 7 grams of fiber, and essentially no fat or sugar. It provides energy but minimal vitamins or minerals on its own. Because it’s almost entirely amylopectin starch, it digests quickly and tends to raise blood sugar faster than flours made from regular rice varieties, which contain more amylose (a slower-digesting starch).
Why You Can’t Swap It for Regular Rice Flour
These two flours are not interchangeable in most recipes. Regular rice flour behaves like a lighter version of wheat flour, producing baked goods with structure and a crumbly or cakey texture. Glutinous rice flour produces something entirely different: soft, chewy, and stretchy with very little structural rigidity. Using one in place of the other will give you dramatically different (and usually disappointing) results.
If you need a substitute for glutinous rice flour specifically, tapioca starch and potato starch are the closest matches, as both create a similar sticky, elastic quality. Use potato starch at a 1:1 ratio, adding a bit of extra liquid to your recipe. Tapioca starch is slightly more absorbent, so you’ll need a bit less than the recipe calls for. Cornstarch can work in a pinch, but you’ll need to double the amount, and the texture won’t be as chewy. Almond flour and coconut flour won’t replicate the stickiness at all and are only useful if you’re after a completely different end product.
Buying and Storing
Glutinous rice flour is sold at most Asian grocery stores and increasingly at mainstream supermarkets, often labeled as “sweet rice flour” or “sticky rice flour.” Common brands include Mochiko (a Japanese dry-milled version) and Thai brands like Erawan. Store it in an airtight container in a cool, dry place, where it keeps for several months. For longer storage, the freezer works well and won’t affect its performance.