Forget jarred salsa. This simple salsa cruda—a mixture of tomatoes, onions, chiles, and cilantro—tastes amazingly fresh and couldn't be an easier snack or appetizer.
Stir together tomatoes, onion, chiles, cilantro, water, and 2 1/2 teaspoons salt. Season with more salt to taste.
Adjust the amount and type of chiles to make this salsa mild, medium, or hot, as you like. Salsa can be refrigerated for up to 3 days.