You can scale this recipe up or down to make the amount of flour you need. Simply multiply the total weight of flour needed by the percentage of each component flour.Tapioca starch: 50% | Brown rice flour: 40% | Potato starch: 10%If your calculator doesn't have a percent option, then use the following example, changing the "500" to the total amount of flour you need:500 x 0.50 = 250g tapioca starch500 x 0.40 = 200g brown rice flour500 x 0.10 = 50g potato starchIf you're making a larger batch ...