If you’re making cold brew yourself, you can control how strong it is, but be aware that many commercially available products are cold brew concentrates, intended to be diluted with water or milk. If you don’t dilute these, you could be consuming more caffeine than you realize.
If You Want to Stay Cool, Opt for Iced Coffee
Of course, if you want to cool off without losing any of the polyphenols in your cup, you can try iced coffee, which is made by serving traditionally brewed coffee (typically very strong coffee to counter the diluting effect of the ice) over ice.
In the flash brewing method, concentrated hot coffee is poured directly into ice. Because most of the extraction occurs in the first few pours of hot water, these methods tend to retain most of their healthy compounds, but are still cool and refreshing on a hot day.
