3 cups /600 grams sweet rice flour (if you can’t find this use cornstarch)
3 cups / 408 grams tapioca flour
1 tablespoon plus 1 teaspoon xanthum gum
Instructions
Combine all the ingredients in a large bowl and mix thoroughly. Make sure that you don’t see any clumps or streaks of individual flours. I’ve often used a food processor to combine these.
Transfer the flour to a canister or other storage container.