It seems such an easy dessert. No intricate baking techniques, no rare ingredients, no specific occasion or purpose. And yet it saddens to know how often this creation can turn out so awfully wrong. A perennial favorite among "Best of Miami" readers, Joe's Stone Crab sticks to some trusted basics from a closely guarded recipe and delivers one hell of a slice of homemade key lime heaven. Cool, creamy, and with just the right tartness from the choicest limes, this pie gets the nod over some fair competition. The crust is a straightforward but delicious graham cracker. No whipping cream is used to desecrate the delicate yet rich filling. And the color is correct: not gaudy green but rather a slightly pale, sour-apple shade. The only chink in this pie's armor is the fact that Joe's closes for the summer, leaving its fans to pine away until fall. It's worth the wait. A nine-inch pie costs $18; by the slice it's $4.95.