The caffeine tag has no wiki summary.
28
votes
10answers
19k views
Caffeine content of cold-brewed coffee: higher or lower than hot-brewed?
I recently rediscovered the joys of cold-brewing coffee. (One level cup of rough-ground beans, 4-1/2 cups of cold water, steeped overnight and strained, produces a rich coffee concentrate. A shot or ...
4
votes
3answers
851 views
Why does instant coffee have less caffeine?
I had gone completely cold-turkey on caffeine for a while due to anxiety issues, and I'm slowly reintroducing caffeine to my diet. I have read in many places that freeze-dried instant coffee has less ...
5
votes
2answers
5k views
How can you measure the caffeine content of a liquid at home?
I saw a question on here about cold brew vs hot brew caffeine content and was wondering what is the easiest (or best) way to measure this at home (if possible)
13
votes
2answers
426 views
Does black tea have the the highest level of caffeine? If so, why?
So it's usually said that tea in general has lower levels of caffeine than coffee and that black tea has more caffeine than green tea (which has more caffeine than white tea).
This suggests that the ...
10
votes
1answer
2k views
How do they get caffeine out in decaffeinated coffee?
Coffee beans naturally contain caffeine. At the store or in a restaurant, you can choose "decaffeinated coffee".
Is really all the caffeine gone or is there just a smaller amount?
How do they remove ...
1
vote
1answer
92 views
Is there any caffeine in kuding tea?
Does anyone know if the bitter kuding tea (苦丁茶) contain caffeine?
11
votes
3answers
6k views
Difference in caffeine levels between light and bold coffee?
Over the last few years I had come to believe that the roasting process for bold coffees removed caffeine from the beans resulting in a lower caffeine content than compared to a light roasted coffee. ...
3
votes
2answers
302 views
Are there visual differences between regular and decaf coffee?
I once asked a waiter at a restaurant how he managed not to mix up cups of regular and decaf coffee when bringing them to various tables. He replied that he could tell by looking at the bubbles – in ...
4
votes
5answers
10k views
Does brewing tea for longer result in higher caffeine content?
The ISO standard for brewing tea says "6 minutes". Of course different teas have vastly different properties, but...
For "average commodity black tea" and "average commodity green tea", will leaving ...
0
votes
1answer
188 views
Which Type of Japanese Green Tea Has the Highest Amount of Caffeine?
I am trying to find the best pick-me-up Japanese green tea and was wondering which type was the best to get from the assortment of Sencha, Gyokuro, Kabusecha, Bancha, etc.
10
votes
7answers
912 views
Bagged or Loose Leaf Tea
What are the practical differences between using bagged vs. loose leaf tea?
Are there differences in quality, caffeine content, etc.? Why?
11
votes
8answers
5k views
How can I maximize the caffeine content of my coffee?
Like many people, I rely on coffee in the morning to really get me going for the day. I always use more than the directions require to get more caffeine for that extra morning jolt.
How much ground ...
3
votes
3answers
308 views
Similar flavors to caffeine?
My wife and I enjoy drip coffee, french pressed coffee, espresso, black tea, green tea, and just about anything caffeinated.
However, my wife wants to avoid caffeine due to its physiological effects.
...
