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A great hot sauce has a lot of pepper flavor, a lot of salt and just the right dose of vinegar. The peppers should be hot enough to get your attention but not so hot that the flavor of the food is obliterated. Cholula and El Tapatio hot sauces get it about right for Latin flavor profiles. Sriracha is an inoffensive way to heat up Asian meals without skewing the careful balances of taste, although I'm still in search of toasted crushed chili flakes in oil that are on the table at some Asian places.
Sometimes, the food needs more heat than a commercial hot sauce can pack. That's not a problem at Taco Mamacita, where the chipotle hot sauce will light you up. If you can rate a hot sauce by the words it inspires, this one is between "whew" and "get me some water." To my mouth it was, "holy smokes, this is hot." Which was just about the right amount of heat.