The salsa will not become bitter when heated. The main ingredients of salsa are garlic, onions, peanuts, shrimp and soy sauce, etc. These raw materials are ground or fried crushed and ground, and then add oil, salt and boiled into a condiment, known as salsa. Originally, the salsa sauce needs to be heated to simmer so heating will not become bitter, only heating causes salsa sauce to become paste will be bitter.