Veal piccata, a thin veal escalope that's dredged in flour, seasoned, sautéed and sauced in lemon, takes on many forms in Dallas. Sometimes it's pasty, sometimes thick. Sometimes it's drowning in lemon to the pucker point. But Ernie's, a supper club with dancing and avocado crab salads, gets it right. Pounded into a skinny scaloppine and drenched with a bracing butter, wine and lemon sauce seriously studded with capers, the meat is tender and juicy. Plus, the flour dredge on the veal never congeals into that slimy Lake Ray Hubbard mucus that is so common in many Dallas preparations.