First thought I had : grandma used to clarify broth with eggs. Iirc you can also use it to prepare coffee when camping. The egg binds to ground coffee in a sau

First thought I had : grandma used to clarify broth with eggs. Iirc you can also use it to prepare coffee when camping. The egg binds to ground coffee in a saucepan so it’s better separated from the coffee you pour into your mug