Linked from
The 11 pages that link to Hot sauce, each with the reason it gives.
Chili pepperBroader topic: It delivers chili pepper pungency in a liquid, preserved form.
Scoville scaleRelated: Producers and labels often use SHU to describe its heat.
CapsicumRelated: Capsicum fruits supply the pungency and flavor of many hot sauces.
CondimentBroader topic: It adds chili heat and often acidity without requiring a dish to be rebuilt.
HabaneroRelated: Habaneros are often blended into sauces that showcase their heat and fruitiness.
Cocktail sauceRelated: It offers an additional source of heat alongside or instead of horseradish.