Nitro cold brew will cool you down on a hot Key West summer day. COURTESY PHOTO Welcome to another Key West summer, when it rains every day for 30 minutes and the breeze is as cool as a hairdryer blowing two inches from your face. It’s four long months of being hit by a heatwave every time you step out of the door. Your tongue parches, your eyes burn, the sweat never stops its relentless drip and you are getting very sleepy, all of the time.