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8 votes

Why do coffee packs have an aroma hole if it is recommended to store coffee in an air tight container

It's actually a one-way valve & it's critical to the shelf life of the coffee and the preservation of the bag itself. When coffee is fresh roasted, it releases carbon dioxide. It's basically a by-...
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7 votes
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Does ground coffee lose caffeine like it loses aroma?

Caffeine has a very very low vapor pressure 9.0X10-7 mm Hg at 25 deg C. Source Almost none would evaporate.
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  • 413
7 votes
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How are coffee beans differentiated?

It is important to have in mind that altitude is not the only feature that allows one to differentiate the coffee beans. Temperature is perhaps even more important (altitude influences in the ...
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6 votes
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What are the effects of caffein olfaction?

From Time Magazine's You Can Now Inhale Caffeine Instead of Drinking It article: Forget coffee and energy drinks—now you can inhale your caffeine. ... Each inhaler boasts a pretty small ...
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5 votes
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Why do coffee packs have an aroma hole if it is recommended to store coffee in an air tight container

Its nothing but a marketing gimmick, enabling the user to use the degassing ventilation hole as aroma hole. If the coffee is super fresh you will be smelling a very bad gas while squeezing the coffee ...
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  • 1,381
5 votes

Bad smelling coffee beans

Beans can smell like dirt, especially if they are beans that are known for having an earthy flavor profile. What you want to avoid are rancid smelling beans that can get that way due to the oils being ...
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3 votes

Why do my Arabica beans smell and taste of burnt rubber?

First thing to keep in mind is that taste varies from person, so you may try other beans/brews that have similar descriptions, so you can learn about your own taste perception. That been said, would ...
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3 votes

Maxwell house instant coffee powder aroma

Instant coffee is not generally considered to be the epitome of great tasting, or smelling coffee. It's almost the antithesis of artisanal whole bean arabica coffee. The iconic and appealing smell of ...
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3 votes

Why does the gas from degassing ground coffee smell bad?

My guess, based on what you've said, is that the two processes involved (that are giving you the off-smells) are oxidation and rancidification. Rancidification ("going rancid") is a process by which ...
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  • 8,497
2 votes

Detering effects of coffee aroma

Though I can't find any recent evidence, it seems that research at one time shows that caffeine can be used as an insecticide. However, due to the fact that natural light exposure degrades caffeine, ...
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  • 1,589
2 votes
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What type of coffee maker creates the most coffee scent?

If you want a lot of scent, you will want to make sure that nothing stops evaporation - so no lid and a large surface area are paramount. The classic method would be hand-filtered pour-over, which ...
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  • 3,853
2 votes

What are the effects of caffein olfaction?

Caffeine, a popular CNS stimulant, is the most widely used neuroactive drug. Present in coffee, tea, chocolate, and soft drinks as well as over-the-counter and prescription medications, it influences ...
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1 vote

Why do I get a better cup when the coffee package isn't opened for a while?

What we experience as "flavor" is really aromas we smell with our noses. And what we are smelling is volatile (= easily evaporated) chemicals from the beans or grounds. These aromas ...
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  • 251
1 vote

What type of coffee maker creates the most coffee scent?

I believe coffee lovers consume coffee to be able to drink that smell. I just want to add to Stephie's answer where that smell comes from. While roasting, during Maillard reaction, the little pores ...
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1 vote

Why do my Arabica beans smell and taste of burnt rubber?

Robusta is very uncommon, because its thought of as undesirable. Arabica is a very broad generalization for beans. Generally the bean, before its roasted, is profiled by its subspecies(aka variety), ...
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  • 538
1 vote

Maxwell house instant coffee powder aroma

It could be a combination of things. I often notice a "fishy" smell from any coffee I consider roasted too dark. While the taste is generally fine, I find the smell off putting and it is one of the ...
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1 vote

Maxwell house instant coffee powder aroma

I use Maxwell House instant coffee. It is freeze dried, which adds nothing to the coffee. I have an acute sense of smell, yet, I've never noticed an odd smell from the Maxwell House, only, a lack of ...
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