The term 'It's Hot Stuff' can be summarized by three crossword solutions: salsa (5 letters), LAVA (4 letters), and CAYENNE (7 letters). Salsa is a type of sauce made from tomatoes, onions, peppers, and other spices. LAVA is molten rock that is expelled from a volcano during an eruption. CAYENNE is a type of pepper that is used to add flavor and heat to dishes. All three of these items are known for their spiciness and heat, making them 'hot stuff'.