Hot answers tagged

10 votes
Accepted

Is coffee a solution or an emulsion?

A cup of coffee is definitely a solution, in the sense that it is composed of dissolved solutes. The solvation occurs once water is introduced. While, there is always a limit to how much of a ...
user avatar
  • 1,409
5 votes
Accepted

What makes a coffee turn out sour?

When the water has too short of a time to extract the flavor from the bean. Try grinding the beans a bit smaller.
user avatar
  • 94
5 votes
Accepted

Is decaffeinated coffee more acidic?

According this source, a study by Dionex, a part of Thermo Fisher Scientific, found that decaf coffee is less acidic than regular coffee. That being said, all coffee causes the stomach to produce ...
user avatar
4 votes
Accepted

How to reduce sourness in my moka-pot brew?

What I immediately notice is that you say the entire brew process takes only 5-10 seconds. Even for a 1-pot moka, this seems way too fast. Vary some other parameters: Start with cold water in the ...
user avatar
  • 8,507
4 votes
Accepted

Office bean-to-cup machine tastes acidic in the morning

My thought is that once you turn on the machine, the machine starts to heat the water. Often the heating system is regulated by a PID regulation (Maybe on-off regulation). The machine will heat the ...
user avatar
  • 106
4 votes
Accepted

Is there a way to prevent acid reflux and gastritis while benefiting from cafeine?

One way which has worked for me -- but this of course depends on the severity of your condition -- is adding cream. Not milk but full fat coffee cream. This dilutes your coffee a little bit, and ...
user avatar
  • 186
4 votes
Accepted

Brew a less acidic coffee

You can try switching to cold brew coffee which is reportedly 67% less acidic than regular brewed coffee. Regarding the caffeine amount, Wikipedia notes: Although less caffeine is extracted with ...
user avatar
  • 618
3 votes

Brew a less acidic coffee

An unsweetened cup of coffee is not the most harmful thing in the world. The sweeteners people often add is the culprit. centraldental Also use a balanced water. Starting with a acidic pH water is ...
user avatar
  • 399
3 votes

What makes a coffee turn out sour?

The sour taste may be related to the aeropress method. From this reddit and this thread in CoffeGeek it sounds like it may be related to under-extraction from either using water that is too cold, ...
user avatar
  • 655
3 votes

What gives coffee its acidic (sour) taste?

As far as I see, there are a few questions mixed here. Let me clarify this. Many different acids are there in your cup: Malic, tannic acid, maleic, oleic, oxalic, caffeic, chlorogenic acids, etc. ...
user avatar
  • 7,593
3 votes
Accepted

What gives coffee its acidic (sour) taste?

That's correct: as your cup cools, perceived acidity increases. This is due to variation in the chemical species affected by temperature. Coffee is like ice cream. Ice cream is least sweet when it's ...
user avatar
2 votes

Is there a way to drip-brew coffee with lower acidity?

If you are simply looking for less acidic beans (rather than changing your brew method), you may check into finding coffee that was dry processed and then dark roasted. Darker roasts will have less ...
user avatar
2 votes

Is there a way to drip-brew coffee with lower acidity?

There are at least three ways to reduce acidity. One way is to roast the beans more, to a dark level. I think that is the main way if you want to stick with your beans. This is inline with MT San's ...
user avatar
  • 2,275
2 votes

What acids are there in coffee?

Funny I should come across this topic tonight, as I'm reading a book right now about the science behind making coffee as a commodity, a beverage and an art form. One particular sentence from the book ...
user avatar
2 votes

What acids are there in coffee?

Note: I leave out a lot of the details of espresso shot extraction and just mention the major points of troubleshooting so don't flame me =p Acidity is always tricky when you talk coffee because ...
user avatar
  • 1,354
2 votes
Accepted

Pour over coffee is too bland or too acid

It sounds like the main thing you're not carefully controlling for is temperature. I have found that if I use cooler temperatures (80-92 degrees celsius) for my pour-over, I get very bright/acidic ...
user avatar
2 votes

Descaling Nespresso with citric acid

My opinion is that you can use citric acid. That's all that I use and I use it with my espresso machines, drip coffer maker, and I have used with Nespresso and Keurig machines. It is food safe. I buy ...
user avatar
2 votes

French Press Coffee too sour

In a comment, you mentioned that the problem seemed to be the beans. Ground coffee doesn't stay fresh very long, even in an air-tight container. But several other things pop out in the question that ...
user avatar
  • 279
2 votes
Accepted

Decreased blood acidity

Our blood ph level drives our respiratory rate, if we are not breathing out enough CO2 we build up carbonic acid which in turn drives our respiratory rate higher until such time we have reduced our PH ...
user avatar
  • 36
1 vote

Why does my espresso come out more acidic than my French press coffee?

There are differences in acidity in different varieties of coffee, and you can choose a variety that is more acidic (more acidic coffees will often have their flavors described with terms that suggest ...
user avatar
  • 279
1 vote

French Press Coffee too sour

One reason could be that your grind is too coarse. Is your coffee pre-ground for french press brewing? Maybe try a different coffee to see if the bean is just not your thing. Your water could also be ...
user avatar
  • 11
1 vote

Espresso with little bitterness

For little bitterness you could try out some of those Ethiopian beans which have a berry-like taste.
user avatar
1 vote
Accepted

Espresso with little bitterness

For acidity, you want espresso made with a light roast. Caffes in the US generally don't serve this because it's not what people expect from coffee. "Dense", though, is a challenge. I'm not ...
user avatar
  • 1,424
1 vote
Accepted

Are specific roasts or blends better for making cold brew at home?

There are many variables that affect the final cup (in any type of brewing): The brewing technique (even with cold brew you can change factors like grind size, steeping in the fridge or at room ...
user avatar
  • 1,228
1 vote
Accepted

How to reduce acidity (and increase strength) of moka pot coffee?

Both issues you're describing, high acidity and weak body, are most probably a result of under-extraction. To increase the balance of the brewed coffee and get a more intense body by increased ...
user avatar
1 vote

What acids are there in coffee?

I'm not sure if I have understood the question clearly. I will give it a try. For espresso making, the temperature is not directly controlled by the barista, but by the espresso machine. So, you ...
user avatar
  • 7,593
1 vote

What gives coffee its acidic (sour) taste?

The acidity of the coffee depends on the variety/origin of the coffee (mostly) and the grade of roasting. The more you roast your coffee, the less acidic it becomes.
user avatar
  • 111

Only top scored, non community-wiki answers of a minimum length are eligible