Coffee Stack Exchange
Coffee Stack Exchange

Questions tagged [caffeine]

Caffeine is a stimulant drug with a bitter taste. It is produced naturally by coffee plants. It can survive the heat of roasting and is water-soluble, so brewed coffee will contain caffeine. Use this tag for questions relating to caffeine content.

Caffeine is a stimulant drug with a bitter taste. It is produced naturally by coffee plants. It can survive the heat of roasting and is water-soluble, so brewed coffee will contain caffeine. Even decaffeinated coffee will still contain a small amount of caffeine.

Use this tag for questions relating to caffeine content, but use for questions relating to decaffeinated coffee.

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What preparation method yields the most caffeine?

I want to make the most caffeinated coffee possible. What method should I use to yield the most caffeine content per liter?
fredley
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How to increase your caffeine sensitivity?

I have been drinking coffee for a long time and over the last few years I've noticed that my sensitivity to caffeine has dropped significantly. Nowadays, it basically has no effect whatsoever - I can drink double espressos and go to sleep right away…
schvaba
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Why is coffee comforting

I find drinking coffee relaxes me. Given that caffeine is a stimulant, I would expect it to do the opposite. Why? is it psychological? does it have something to do with it being a hot beverage? is it an effect of the caffeine?
Eric
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How much caffeine is lost after 24 hours?

Suppose I brew a 16 oz cup of coffee, take just one generous sip (one ounce), and then put the rest in the fridge. Just how "stale" is my coffee, when I revisit it 24 hours later?
Caffeinated
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Student friendly coffee?

What type of coffee would you good people recommend as a quick and easy caffeine dose for staying alert? (specifically this, although I am fond of the taste too as a secondary factor!) I am currently just drinking some pretty meh instant coffee…
Malnurturedㅤㅤㅤㅤ
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How much does caffeine concentration in a cup of coffee decrease as a function of time (roughly)?

For example, if I let a cup of coffee sit for 1-2 hours, would the amount of caffeine I get mostly be the same? Or does it decrease?
Inertial Ignorance
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How does a snack with a coffee slow down the caffeine's effect?

I have stumbled upon the following sentence: Have your coffee with a snack to allow a slower release of caffeine into your system. Browsing the internet I could see exactly the same claims, not only in articles, but also in comments and unanswered…
Dart Dega
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Does making Bali Coffee change the amount of caffeine compared to filter coffee?

Bali coffee is made by tossing finely ground coffee directly in the water (no filters, etc.). Does this change the amount of caffeine in the coffee, compared to coffee from a filter machine? (Coffee produced on Bali is generally Robusta rather than…
jmac
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Does coffee affect people from all races the same?

I strongly assume that, if the looks from people all over the world vary, then also there metabolic system should vary and wonder, if there are noticeable differences how caffeine affects people from different cultures. I tried to look it up on the…
Imago
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Does hydration level change the effect of caffeine?

Apologies if this question does not belong here, it may be suit for the chemistry site, but it pertains to the consumption of coffee directly -> so here it is. Does your prior level of hydration have any affect at all on how much of a "buzz" the…
ofey73
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Will I develop a caffeine dependency by skipping 2 days?

A couple of months a ago I broke my daily caffeine habit because I disliked waking up every morning already "needing" caffeine. But, I LOVE coffee and I LOVE the buzz caffeine provides. So, for the past couple of weeks I have remained disciplined in…
Nyantho
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Recommended time to finish a cup of coffee for the best caffeine surge?

Is there such thing as a recommended time lapse in which to finish drinking a cup of coffee, in which you get the best kick out of the caffeine?
chromechris
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What is high caffeine coffee in Turkey?

I live in Istanbul, I love espresso, but most espresso here is 100% Arabica. Robusta coffee is hard to find. What alternative coffee do you recommend to get the right caffeine during the day?
ayse aks
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Does coffee help if you are tired because you have over slept?

If you have over slept and was drowsy because of this, would coffee give you an effective boost to get your day started or would you be better off with something like a sugary soda?
SomeBloke
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Caffeine vs Nicotine addiction

We, who love coffee very much, have a belief that coffee(which has caffeine) is better than cigarette or any other products which has nicotine. But as far as I know caffeine isn't so good for the body too. Is caffeine is less harmful than nicotine?…
Milon Sarker
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