First came the fast food breakfast wars. Now, it seems, the name of the game is refreshments. Every fast food joint wants a slice of the beverage pie, and number one chain McDonald's is leading the way.

Next month, the corporation will finally debut smoothies in Strawberry Banana and Wild Berry, the result of a year's worth of testing. What's more, the quick-service behemoth is now experimenting with frozen juice blends, slushies comparable to those famously served at rival Sonic. Test markets for flavors like strawberry lemonade currently include Michigan and Austin.

McDonald's has found surprising success with the introduction of premium roast coffee, sweet tea, and McCafé lattes and cappuccinos. It'll be interesting to see if the brand has good fortune with cold Summer refreshments. Are you into the concept of a McDonald's slushie?