Peel the skin and take out the core. Set aside.
Put tomatoes, onion, garlic, serrano pepper, salt, and lime juice in a food processor and blend until smooth. Do not add cilantro yet.
Peel the skin and take out the core. Set aside.
Put tomatoes, onion, garlic, serrano pepper, salt, and lime juice in a food processor and blend until smooth. Do not add cilantro yet.