How long is the life of a shot of espresso?

Question

When pulling a shot of espresso, how long is its life before it is too bitter?

I know this might change by the bean, but what is a rough estimate?

I was doing some coffee tasting and some of the shots were left unused for about 5 minutes and the barista said that these shots were now "dead" and that they don't reflect what the true taste of the coffee is.

Do I really only have 5 minutes to drink espresso before its no longer drinkable?

Answer 1

This barista says no, you can enjoy your shot for a little while:

In reality, there are only a couple of things that happen to espresso over the course of a few minutes. First, the crema or foam that sits on top of the espresso reintegrates with the liquid. Crema, on its own, contains some of the best flavors and aromatic qualities of the espresso in high concentrations. Drinking it straight can be overwhelming but, it stands to reason, that having the crema reintegrate might actually be a good thing. Second, the espresso cools down. The temperature of espresso has a lot to do with how we taste the various flavors contained within it...

I am not an espresso fan myself--I like regular coffee, but not after it has cooled down, and never reheated. Many folks are perfectly content to microwave a cold cup and drink it.

I imagine that older, colder espresso is palatable to you to the extent that you are willing to tolerate it. A small shot of coffee--and lets face it, that is all espresso is, even if it is brewed in a fancy manner--is going to cool off much more rapidly than a full cup, or a full pot.

Answer 2

Espresso starts losing some of its flavour immediately so I'd say drink it within one minute. If made at the right temperature it should be cool enough to drink after a few seconds anyway and after a minute it will start getting too cold to enjoy. I'd also suggest stirring your espresso before drinking to mix the different layers and get a more homogenous drink.