I aggree with @RollingCompass, that enzymes are used to make oat milk. They are used to prevent slime. You can buy them here: nectarbar The process is well described on the homepage and the enzymes are made without modifiying genetics and are certified organic. preparation of oat milk:
- mix oat flakes (100g) with water (1liter) and heat up to 70°C
- put about 3 drops of enzyme N1 (alpha-amylase) to the mixture and wait for 20 minutes, mix for 2 seconds
- put about 3 drops of enzyme N2 () to the mixture and wait another 20-40 minutes
- filter the mixture in linen cloth or similar the durability is 3-4 days (5. to extend durability you can boil the drink for a few minutes)
I didn't try it but it seems working.