Processed beans that are stored in ordinary containers will last around 10-14 days. Packaging at home using foil will extend the shelf life up to 3-4 weeks, whereas roasted beans packed in sealed four-layer paper bags can be stored for up to 6 months.
Caffeine content in different types of coffee can vary. A standard cup of coffee (around 8oz) will contain an average of 94.8mg of caffeine. An Espresso on the other hand will have an average of 63mg of caffeine, and a standard latte will contain an average of 77mg of caffeine. The caffeine content depends on the size, strength and type of coffee you are consuming.