Why does the “head” of foam when you pour a soda dissipate within a few seconds, but on many beers it lasts much longer?

Question

Why does the “head” of foam when you pour a soda dissipate within a few seconds, but on many beers it lasts much longer?

In: Chemistry

Answer 1

Soda doesn’t have much in it. Just sugar and water and little bits of flavor. Beer had tons of material left from the grain its made of, so there is lots more structure.