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Full of Gas


In the commercial coffee industry, there’s no real definitive answer as to how long roasted coffee beans actually lasts on the shelf. They say technically it’s fine anywhere between 12-24 months.

Fortunately for Grouch & Co coffee drinkers, we do know our product, and we do have a definitive answer for you:

After roasting, we let our beans rest & develop for 5 – 7 days. Our current crop of single origins have full flavour development by day 7.

From green to roasted, it’s a scientific process!

Why do we even need to let the roasted coffee beans rest before pumping them through the machine?

Pretty simple answer: When green beans are roasted, oils are released and CO2 is a by-product. We do not want that gassy by-product flavour and bubbles in our coffee!

We need to let it settle out over the first 5 -7 days. Also we feel that the flavour of our specialty grade beans continues to develop after roasting and by day 7 its flavour is fully developed.

By keeping our specialty coffee product in the premium packaging that we use, the gaseous by-products are able to release gently through the one-way gas valve.

Naturally, over time the coffee beans will continue slowly releasing oils, which is also the coffee aromas and tastes. For maximum freshness, consume Grouch & Co’s specialty coffee any time between 5 days to 6 weeks after roast date. And please note that our coffee won’t spoil anytime before industry standard 12-24 month period.

Freshly roasted coffee needs to settle for 5-7 days.


We have to give huge props to Xiuju Wang and his incredible paper “Understanding the Formation of CO2 and Its Degassing Behaviours in Coffee” 2014 for The University of Guelph, Canada.

We highly recommend you put your smart-glasses on and have a read of this:
Wang_Xiuju_201405-PhD-1 – SMART DUDE DEGAS PAPER


The Grouch & Co team xx

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