
1 cup Soybeans
Step 1 – Pour your soybeans out onto an oven tray, and dry roast them in an oven set to 100 Fahrenheit for 1 hour, or as low as your oven can reasonably maintain its temperature.
Step 2 – Remove your soybeans and transfer them to a blender, and pulse the beans on and off, before setting your blender to medium speed and blending until totally fine.
Step 3 – Pour the soy flour through a sieve to catch any of the errant pieces of unblended soybean, and then store your soy flour in a sealed container for up to 1 month.
Find it online: https://thecoconutmama.com/how-to-make-soy-flour-at-home/