Once you open a bag of coffee beans and break the seal the coffee beans in the bag will last for up to 2 to 3 weeks before they lose their freshness and flavor.
The coffee beans will remain safe to use even months after the coffee beans have been opened.
But if you want the best taste and freshness it's best to use the opened bag of coffee beans within a few weeks.
Once opened it's best to grind the coffee beans up and then place them in an airtight sealed container or bag.
You can store the ground coffee beans in a Mason Jar or airtight sealed bag that you remove the air from.
Then the ground coffee will remain fresh for a few months.
Coffee beans are best ground right when you make the coffee and then use the coffee beans up within a few weeks of opening the coffee beans bag.