Chop onions and tomatoes as fine as possible.

Peel ripened avocados and remove seeds.

In a bowl, combine the avocados, onion, tomato, salt, garlic salt, and a drop of lime juice.

Use a fork to mash up the ingredients until smooth.

Taste test and add more salt if needed. Put the avocado seeds in the Guacamole to keep it from turning brown.