Ask Mr. Wizard

What’s the usefulness of beer foam?

TroubleShooting

Eddie Chan asks,
Q

I went out to have a drink last Saturday and had a quarrel with one of my friends about the usefulness of foam. I said that the foam helps to retain the cool temperature of the beer, but no one believed me. I felt like an idiot. Can you tell me the usefulness of foam? Please reply as soon as possible, or I will never go out drinking with my friends again.

 

A
really like beer foam — in fact, I’m kind of obsessive when it comes to beer foam. Any argument about foam is positive in my book, so you shouldn’t feel like an
Response by Ashton Lewis.