I finally visited Rutt's Hut after seeing it on TV about eight times. Be careful -- there's minimal signage from the street so you have to know where you're ending up!
Things to know: all hot dogs are called Rippers, since the weiners are fried and the casing rips. I samples three Rippers, which they offer with various degrees of frying; I tried an in-and-outer, a standard Ripper, and a Cremator, for the sake of experience. The standard is best. The Cremator was god-awful; it was like eating a brick made out of fried meat. I found that a satisfying way to eat the hot dog is by ordering a (respectable) chili and placing a bit of that on the Ripper along with some of their house-made relish. They're known for their relish, and it's among the best I've ever tried.
Folks comment on the surly service, but the woman was very nice to me.
TIP: forgo the [frozen] french fries for their fresh onion rings, which are light and full of flavor. The portion I got was huge!
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