Guacamole (Silvia Cardon)

1 small onion
1 large meaty tomato
1 small chili pepper (fresh jalapeno)
8-10 avocados
few drops of lemon
salt to taste

Chop onion very fine.  Add chopped tomato and chili.  With a fork or potato masher, mash to a pulp the ripe peeled avocados.  Add salt and lemon.  Save 2 or 3 of the pits and place on top of the combined mixture to prevent darkening.