Well kiddo, peanut sauce is a yummy sauce that people use to put on their food, like chicken, rice or noodles. It's made from crushed peanuts that have been mixed with other yummy ingredients like soy sauce, sugar, garlic, and sometimes coconut milk.
The peanuts are kinda like when you have PB&J sandwich, but instead of just spreading the peanut butter on bread, they mix it with other things to make it more delicious. And these other things like soy sauce, sugar, and garlic give it a unique flavor.
Sometimes there are different types of peanut sauce depending on where it comes from. For example, the Indonesian peanut sauce is usually spicier than the Thai version which is milder.
So, if you ever try peanut sauce, just remember it's made from crushed peanuts and other yummy ingredients that make your food taste even better!