Tag: Leftover coffee

According to food safety experts, black coffee left at room temperature is generally safe to drink for up to 24 hours, but its flavor can degrade significantly in just 30 minutes. This raises the question: is it bad to drink coffee from the night before?

While many people assume leftover coffee has lost its potency, caffeine is a remarkably stable compound that does not degrade significantly over time. So, does leftover coffee have less caffeine? The short answer is no, but the coffee's flavor is a different story.

According to food safety guidelines, dairy products should not be left at room temperature for more than two hours. This critical fact significantly impacts the shelf life of your favorite caffeinated beverage and explains why coffee with milk lasts a very short time outside of refrigeration.