Wash all fresh produce thoroughly to remove dirt and residues.

Remove stems and cores from tomatoes, then dice into small pieces.

Finely chop the onion into small, uniform pieces.

Seed and mince the jalapeño peppers, adjusting the amount based on desired heat level.

Rinse cilantro under cold water and chop it finely.

In a mixing bowl, combine diced tomatoes, chopped onion, minced jalapeño, and chopped cilantro. Stir gently to mix without breaking down the tomatoes.

Pour in the lime juice and season with salt and black pepper to taste.

Taste the salsa and adjust the seasoning or lime juice as needed.

Let the salsa sit in the refrigerator for about 30 minutes before serving to allow the flavors to meld together.