Despite what the article cited above says, Texas hot Dog Sauce here in the Hudson Valley has no tomato in it. I had long thought it did have a tomato base, but learned better from one of our Roadfooders ( an ex-HV resident, now living in the Dallas TX area) who posted a recipe that really works and has no tomato in it. I made a small batch based on his recipe last week and it was very very close to what they serve at Kingston’s famous Dallas Hot Wieners.
Also, it is my opinion that the sauce was originally developed to disguise the taste of an inferior hot dog, and, at least here in the Hudson Valley, the quality of the hot dog has always been secondary to the quality of the sauce. Also, I’ve never seen a hot dog deep fried in any Texas Hot Wiener joint around here – they are steamed and grilled on one of those rolling grills and served on a steamed roll. Deep frying seems confined to North Jersey and some places in Connecticut. Also, the order of applying the dressings is: mustard, sauce, diced raw onion. And an order for them around here goes, "Two with everything".