Chop the onions in a bawl and add a teaspoon of salt.squeeze the salt to the onions until the onions become soft. Rinse it with clean water to remove the salt

Chop the tomatoes into small pieces and add to the onions.. Cut the cucumber into round pieces and add to the bawl as well

Peel the avocado and chop into small pieces then add it to the bawl...put one tablespoon of vinegar or squeeze in lemon juice into the mixture

Add the chopped coriander leaves and then mix well with a fork