Coffee grounds in espresso puck
How Long You Can Store Ground Coffee Before It Starts To Go Stale
When it comes to a delicious cup of coffee, flavorful grounds are key. This is why it's important to know the shelf life of ground coffee — which can vary based on how it's stored.
Ground coffee will turn out a decent cup of joe for a good two weeks after it leaves the grinder — good enough that the majority of coffee drinkers won't notice a difference.
Two things combine to steal freshness from coffee: light and oxygen, so it's best to grind only the amount of beans you expect to use at any given time.
Store your grounds in an opaque, airtight metal or ceramic container and place it in a cupboard where the temperature range is 50 to 70 degrees Fahrenheit.