system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
how long do roasted coffee beans last before you should throw them out?


assistant
Freshly roasted coffee beans should be used between two and ten days after roasting.  If you use them too soon, they can be bitter and off-gas carbon dioxide.  If you use them more than two weeks after roasting, most of the nuance of the flavor is gone due to changes in the chemical composition of the beans.