Perfect Guacamole

The trick to perfect guacamole is using good, ripe avocados.
Check for ripeness by gently pressing the outside of the avocado.
If there is no give, the avocado is not ripe yet
and will not taste good. If there is a little give,
the avocado is ripe and ready for your Guacamole dip.

Ingredients:
2 ripe avocados
1/2 red onion, minced (about 1/2 cup)
1-2 serrano chiles, stems and seeds removed, minced
2 tablespoons cilantro leaves, finely chopped
1 tablespoon of fresh lime or lemon juice
1/2 teaspoon coarse salt
A dash of freshly grated black pepper
1/2 ripe tomato, seeds and pulp removed, chopped
Directions:
Cut avocados in half. Remove seed.
Scoop out avacado from the peel, put in a mixing bowl.
(See How to Cut and Peel an Avocado.)
Using a fork, mash the avocado.
Add the chopped onion, cilantro, lime or lemon,
salt and pepper and mash some more.
Chili peppers vary individually in their hotness.
So, start with a half of one chili pepper
and add to the guacamole to your desired degree of hotness.
Keep the tomatoes separate until ready to serve.
Remember that much of this is done to taste
because of the variability in the fresh ingredients.
Start with this recipe and adjust to your taste.
Cover with plastic wrap directly
on the surface of the guacamole to prevent oxidation
from the air reaching it. Refrigerate until ready.
Just before serving, add the chopped
tomato to the guacamole and mix.
Garnish with red radishes or jicama.
Serve with tortilla chips.