Linked from
The 11 pages that link to Hot sauce, each with the reason it gives.
Scoville scaleRelated: Producers and labels often use SHU to describe its heat.
CapsicumRelated: Capsicum fruits supply the pungency and flavor of many hot sauces.
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.