> trust the vegans enough to know what is vegan and what is not E.g. flour might not be vegan (or non-icky). L-Cysteine is an amino acid and one of the most c

> trust the vegans enough to know what is vegan and what is not E.g. flour might not be vegan (or non-icky). L-Cysteine is an amino acid and one of the most common reducing agents in baking. It is often extracted from various sources such as poultry feathers from ducks or chickens, cow horns, hog's hair, and even sheep wool. However, the L-Cysteine used in food can also be derived from human hair. Most of the hair used for L-Cysteine production originates from China, where it is collected from barbershops and hair salons. It can be created vegan in labs, but that would increase the price. l-Cysteine offers many benefits: - Gluten softening and dough relaxing - Dough conditioning - Reduced mixing and fermentation times - Better dough consistency and easier handling - Improved pan flow Many bakers don't include it intentionally, they purchase the flour and it's already included.