I have a handheld milk foamer for my coffee. I can foam milk to twice its volume when it is cold, out of the fridge, but it barely foams at all when heated. Why is that?
Mark Alberstat, Halifax, Nova Scotia, Canada
We pay 拢25 for every answer published in 麻豆传媒. To answer this question 鈥 or ask a new one 鈥 visit newscientist.com/lastword. Terms and conditions apply.
This article appeared in print under the headline “Foaming mad”
Advertisement
Topics:
