Does hot coffee destroy the alcohol in Kahlua?

• 1 oz Kahlua in 8 oz of hot coffee. No cream.
• Does the heat destroy the alcohol?

 

Do it and find out. And let us know the result.

 

Alcohol boils at 78C, water 100C so a significant percentage of alcohol will evaporate off but not all. It does not get "destroyed" as such.

 

OK ...... Thanks for the info. By the time I put the Kahlua into the coffee the temperature would be below 100C - maybe about 90C. I will have to measure it.

 

https://www.thekitchn.com/how-to-ch...ol-levels-the-kitchns-beer-school-2015-217260

 

No. Chemist here. Heat does not "destroy" alcohol in a libation. To remove the alcohol from a liquid, you'd most likely have to "boil it off". Even then you'd remove only about 90% of it. Brewed coffee not hot enough to impact ethyl alcohol at all.

 

Not to mention that it will probably cool down further before all the alcohol is boiled off.

 

No, it's not destroyed.

But if you're really wondering if the alcohol will evaporate; see the link below.

Basically, the 78 degree figure mentioned refers to pure alcohol. This value approaches 100 degrees celsius as the alcohol concentration approaches zero percent.

https://www.chemguide.co.uk/physical/phaseeqia/nonideal.html

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That's just it, it's not necessary for all alcohol to evaporate from the drink. For example, I like to add Kahlua in coffee.