Hot dogs and frozen custard. It doesn't sound like an original idea, but when you think about it, where can you treat yourself to such a meal outside the circus, where it costs approximately as much as an ounce of sevruga? Wild About Harry's, that's where. This tiny place on Knox Street sells dogs--Texas-style, New York-style, Chicago-style--and the best frozen custard in town. That's right, it's not frozen yogurt. It's Harry's wife's recipe and you can have it with toppings, in a cone or a cup, or whipped into a shake.