Overcooked Covid 19 Edition: Dalgona Coffee and Can I foam everything? (Yes)

Screen Shot 2020-03-30 at 5.44.51 PMSeems like shelter at home has unlocked everyone’s interest in:

Dalgona Coffee, making coffee into a foam. 

Yes, the most trendy stay-at-home drink is a complete makeover of the transnational coffee: diagonal coffee, where the coffee becomes the cream, and the cream is the drink.

So what is so magical about instant coffee that you can just wipe them into foam, and can you do that to your normal french pressed coffee bean coffee?

The answer its in Xanthan Gum. Its a food additive in the instant coffee and in many other cream products to add and creaminess to the liquid. It binds to the water molecules and limits its movement, to create the smooth and thick texture.

Screen Shot 2020-03-30 at 5.45.03 PM

So can I make foam out of other food thickener? Absolutely. Actually, the most common way to make foam, in culinary world, is using gelatin. Yes, the one you use to make jello.

Just like Xanthan Gum, gelatin binds with water and can create a thick foam. So don’t just stir those instant coffee around, add some gelatine to your cold matcha, tea, and juice, and you can also make your own dalgona ______ (insert drink).

Published by

Huang Zhuojun

I'm a Ph.D. student, studying Materials Science and Engineering at Stanford University.

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