Does hot or iced coffee contain more caffeine?

Iced coffee contains more caffeine in all the recipes I have seen. The coffee is brewed with a greater amount of coffer per unit water, so that when it is poured over the ice (even at room temperature), when the ice melts the iced coffee doesn't taste so watered down. read more

Iced coffee contains more caffeine in all the recipes I have seen. The coffee is brewed with a greater amount of coffer per unit water, so that when it is poured over the ice (even at room temperature), when the ice melts the iced coffee doesn't taste so watered down. read more

When it comes to caffeine, temperature plays a big role. "Caffeine's solubility is primary driven by temperature, such that at higher temperatures, significantly more caffeine will dissolve in solution than at cooler temperatures," says Joseph Rivera of Coffee Chemistry. read more

More caffeine can be extracted from coffee beans with hot water than with cold water. This implies that hot coffee contains more caffeine than cold brew, which is made with cold water. “Caffeine’s solubility is primary driven by temperature, such that at higher temperatures, significantly more caffeine will dissolve in solution than at cooler temperatures,”Joseph Rivera of Coffee Chemistry told The Kitchn. read more