Friday, January 15, 2016

This Is How To Stop Soy Milk Going Weird In Your Coffee

Stop taking your coffee black.

It is very annoying when you add soy milk to your coffee and it goes funny.

This reaction is called “curdling” and it is not ideal.

Instagram: @novarella

There are two reasons why the soy milk curdles:

There are two reasons why the soy milk curdles:

1. The acidity of the coffee.
2. The temperature of the drink.

Flickr: michaelsgalpert / Via Creative Commons

If you favour a more acidic coffee (like many African coffees), it’s more likely to curdle.

According to the head of coffee at Pact ( fresh roasted coffee delivery service) and award-winning barista Will Corby: “There are a few things to watch out for. Firstly, don’t put the milk in the coffee when it is boiling hot. And if you are heating up the milk first, don’t let it go above 60ºC. Try to avoid using naturally acidic coffees. A lot of African coffees can be acidic, so you would do better aiming for a Brazilian or Colombian. Something like the Planalto coffee would be perfect.”

Instagram: @sir_zelentez

So soy milk + a hot light-roasted coffee = cheesy-looking soy milk.

Jeremy Challender, co-director of Prufrock Coffee, head judge of the UK Barista Championship, and authorised Speciality Coffee Association of Europe trainer, explains: “The curdle point for soy is a pH of 5.5 if I recall. So soy will curdle below that. And pretty much all light-roasted arabica coffee will have a pH below 5.5.”

(According to The Little Coffee Know-It-All, the proteins in soy will maintain their shape up to a pH of around 4.9, with black coffee having a pH of around 5.)

Instagram: @vegspectrum


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