Today's #quizzytime: In what dish would you have eaten duck feathers or processed human hair (yes you have eaten it)?
Ans: In any commercial bread related food. L-cysteine (sometimes shown as E920 on food labels) is a food additive often derived from duck feathers or human hair. It is used as a dough conditioner and strengthener, meaning the dough can be stretched out to make a pizza crust,
for example. L-cysteine helps extend the shelf life of commercial breads. It's is an amino acid and is perfectly safe for human consumption. Most L-cysteine is sourced from China, where feathers are collected from farms, and human hairs from the floors of barbershops.
The feathers and hairs are processed in Chinese factories, where L-cysteine is extracted in a chemical process. Bon Apetit
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