Try this Taco Bell Hot Sauce recipe
Standard salsa fresca relies on raw aromatics and bright acids, but copycat fast-food condiments demand a completely different chemical approach built on cooked tomato solids and dried spices. Replicating the distinct profile of commercial taco sauce often results in a scorched, bitter pot because thick tomato paste clings stubbornly to the bottom of the pan and burns before the flavors can meld.
Prevent this disaster by thoroughly whisking the six ounces of tomato paste into the cold water and corn starch off the heat until entirely uniform. Only then should the pan go over medium heat, allowing the starch molecules to hydrate and gelatinize evenly as the temperature rises. Simmering the liquid for thirty minutes reduces the moisture content just enough to concentrate the cayenne and chili powder without turning the sauce into a paste. Whisk continuously during this reduction phase to keep the solids moving away from the hot metal surface.
Adjusting the acidity requires caution because swapping white vinegar for fresh lime juice introduces excess water and enzymes that will thin the final viscosity. Stored in an airtight container in the refrigerator, this condiment holds its flavor profile for up to two weeks.