In a food processor or blender, combine the tomatoes, onion, garlic, jalapeños, serrano peppers, and sugar. Pulse several times until the mixture is mostly smooth but still has a bit of texture. This forms the flavorful base of your salsa.
Heat olive oil in a skillet over medium heat. Pour in the blended mixture and cook for about 2 minutes, stirring occasionally, until it begins to boil and the raw flavors mellow. Remove from heat, then stir in the fresh cilantro, ground cumin, and oregano until fully incorporated. Season with salt and cracked black pepper to taste. Serve warm or let cool to room temperature before enjoying.
Notes
Tip: Try your salsa with some of our fried tortilla chips.