Some like it hot. They're sissies. We normally want our salsa spicy enough to serve as a paint stripper in a pinch. The salsa verde at Taco Diner, however, is a different animal. We're not sure exactly what they put in this magical sauce, but it's unlike any salsa we've had in Dallas, creamy smooth and iridescent green, with a tangy flavor that's great on the restaurant's mouth-watering tacos. It's flavorful enough to satisfy fans of heat, yet mild enough to appeal to even Yankee palates. Luckily, the service is top-notch, so if you want to go through four or five bowls (and you will), it's not a problem.