Spicy Guacamole

Ingredients
2 ripe avocados
1/4cup ripe tomato,seeded and chopped
1/2cup finely chopped onion(or grated)
3tbsps chopped cilantro
1tbsp lime juice
2 serrano chillies, seeded and finely chopped or minced
salt and black pepper as needed

Method
Cut the avocados in half and remove the pit.Scoop out the flesh from the peel.
Put it in a bowl and ,mash it up with a fork.
Add all the ingredients except the tomato to it and mix them well.
Cover it with a plastic wrap directly over the guacamole so that the avocado does not turn brown.
Refrigerate until ready to serve.
Just before serving add the chopped tomato and mix.