Coffee lovers have found their latest summer obsession: the coffee slushie. In fact, a homemade coffee slushie can be a smarter choice than other frozen beverages, Manaker said. "A homemade coffee slushie can actually be a healthier option, since traditional slushies are typically loaded with added sugars and offer little nutritional value," she said. To make the drink more satisfying, she recommends using dairy milk. "If you're lactose intolerant, lactose-free dairy milk is a great option that keeps those same nutritional benefits intact, just without the lactose."