You can make salsa by either using fresh or canned tomatoes. It's important to have fresh cilantro and jalapeños. Here is a basic salsa recipe that can be used instead of buying a prepared salsa: -- 2 Large Roma tomatoes, cubed or 1((14.5 ounce) can diced tomatoes -- 2 jalapeños, minced with seeds removed (be sure to wear rubber gloves) -- 1 (8 ounce) can tomato sauce -- 1 large clove garlic, minced -- 2-3 Tablespoons red onion, diced -- 1/2 teaspoon salt, plus more to taste (always taste your finished sauce) -- 1 handful chopped cilantro ( this is to your liking) Process all ingredients in a food processor or blender until it reaches your desired consistency.