Key lime pie is one of those quintessential South Florida dishes attempted by every professional and amateur in kitchens from the ocean to the bay to the river. But like fellow local staples Cuban sandwiches and conch fritters, not all pies are created equal. Quinn's, a restaurant perched on Ocean Drive, has beat the odds and created one boss key lime pie. Consider the qualifications: The perfect balance between acid and sweetç Check. A buttery graham cracker crustç Check. Most important of all, is the filling velvetyç Does it melt on the tongueç Check and check. At $7 a slice and served with raspberry coulis and fresh chantilly cream, the pie at Quinn's is a culinary hole-in-one. People flock to Quinn's for the Ocean Drive ambiance, but they stay for the wedges of key lime ecstasy.