Editor's Note: In his book Food Rules, Michael Pollan declares, "Eat all the junk food you want as long as you cook it yourself." The idea is that by cooking at home, you'll avoid all the unpronounceable chemicals found in store-bought junk. And even though you might gorge on it, you can only eat as much as you made -- and it takes hands-on effort, not just a trip to the supermarket, to procure more. In that spirit, we offer DIY Junk Food, the recipe column for those who want to get their hands dirty in the kitchen before enjoying …