Multiple choice general knowledge

Coffee beans emits ___ after roasting

  1. Oxygen

  2. Carbon di-oxide

  3. Nitrogen

  4. Citric Acid

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

After roasting, coffee beans undergo degassing and release carbon dioxide (CO2) for several days. This is why fresh roasted coffee needs to rest before reaching optimal flavor, and why coffee bags have one-way valves.