However, unlike sriracha which is very dependent on chilis for its taste, the hot sauce with its many ingredients is very tangy. It’s because its other main ingredient is vinegar. If you taste hot sauce, you get a burst of heat together with the tangy vinegar. Vinegar serves two purposes: makes the hot sauces delicious with its flavorful play with the heat and it also helps preserve the chili, too. This is one reason why most commercially made hot sauces can be stored at room temperature.