Mix
- 1.Whisk the dry ingredients in a large bowl: glutinous rice flour, tapioca starch, sugar, and salt.
- 2.Pour in the warm water (or plant milk) and oil. Stir with a sturdy spatula until smooth — about 1 minute. The "dough" is more like a thick, glossy paste; it should slowly drip off the spatula in a thick ribbon.
If the mix looks too stiff (paste-like, not ribbon-like), drizzle in another tablespoon of water. Mochi rolls bake from a wetter batter than wheat dough.