Guacamole

3 ripe avacados
1/4 cup fresh lime juice
1/3 cup minced red onion
1/3 cup chopped, seeded tomato
1 serrano or jalapeno chile, seeded and minced
Salt and black pepper

Peel and seed the avacados.
Mash the avacado and lime juice with a large fork or potato masher .
Stir in the remaining ingredients and taste for seasoning.