Silvana's All-Purpose Flour Blend (For Gluten-Free cooking)

6 cups white rice flour, preferably Bob's Red Mill
3 cups tapioca flour (not starch!)
1 1/2 cups potato starch (preferably Bob's Red Mill)
1 tablespoon salt
2 tablespoons xanthum gum, preferably Bob's Red Mill

In a large bowl, mix together and store in airtight container."