What happens if you freeze coffee?

When you freeze coffee, the water in the coffee freezes into ice crystals, leaving the other components of the coffee concentrated in the remaining liquid. This process can lead to a significant change in the flavor and texture of the coffee, making it stronger and potentially more bitter.Additionally, freezing and thawing coffee can cause the coffee grounds to break down and become finer, which can lead to overextraction and more bitter flavors when the coffee is reheated or thawed.