If you've ever made iced coffee, your efforts may have involved pouring piping hot joe over ice cubes that immediately melt, or sticking your leftover coffee in the fridge. But there's another way. Oh yes. For this week's Summer School lesson, we get an education in cold brew coffee. It's perfect for the summer, because you don't even need to boil water – but you do need a bit of patience. "Cold brew involves pouring room temperature water over coarsely ground coffee and letting it sit for 12 to