When it comes to sweets, chocolate is king. And it inspires chefs to reach new heights with amazingly chocolatey dishes. At Petsi Pies in Somerville, Mass., the indulgences begin with pie crusts made from ground chocolate cookies, and goes on to include Chocolate Peanut Butter Banana Pie and an incomparable Mississippi Mud Pie.Bean-to-bar chocolatiers French Broad Chocolates in Ashville, N.C., create the addictive Chocolate Mocha Stout cake, then ups the ante with the thick and creamy Maple and Smoked Sea Salt Liquid Truffle. And Roni-Sue's Chocolate's on New York City's Lower East Side started a movement with its Pig Candy: crispy slices of fried bacon dipped in chocolate.