Coffee connoisseurs have at least once asked themselves: why is there a hole in coffee bags?
The most common misconception is that the hole in the bag is needed to check the freshness of the coffee by smell.
Some people believe that the degassing valve is needed to determine the aroma of the coffee. But such a hole is not for sniffing the packaging.
Why does coffee packaging need a valve?
Coffee from suppliers arrives on store shelves in individual packaging, and the gas valve on it indicates that the product was packaged immediately after roasting.
This coffee retains its aroma and essential oils for a long time.
Such cracks help to release carbon dioxide and not to let oxygen through.
The presence of a valve on the packaging indicates a quality product that has retained all its properties.
How does the valve work?
The degassing valve works on the following principle:
- releases carbon dioxide and prevents oxygen from reaching the roasted beans.
Oxygen will negatively affect the coffee beans, which can lose a significant part of their aroma within a couple of days.
