Salsa Fresca:
4 lb. tomatoes, 1 cup chopped onion, a couple of serrano peppers, chopped and seeded, 1 bunch cilantro, 1 tbl. salt, 2 tbl. sugar, 2 tablespoons vegetable oil, 1/3 cup fresh lime juice. Plunge tomatoes into boiling water for 1 minutes. Remove tomatoes and run under cold water until cool. Chop tomatoes or pulse in food processor. Combine with remaining ingredients.