Guacamole

3 large avocados, fully ripened
5 Tbsp onion, minced
1/4 cup fresh-squeezed lime juice
1 medium tomato
1 tsp. fresh cilantro, chopped finely
Dash of Tabasco (optional)

Peel and seed the avocados and the tomato.  Roughly mash the avocado
in a mixing bowl, leaving some chunks.  Add the tomato and remaining
ingredients and chill for at least two hours before serving.  Serve
with tortilla chips.