Cooking - How to cook Guacamol Tex-mex

To cook by yourself a delicious and economic guacamol, the famous mexican and tex-mex receip, you will need : Ingredients :

2 avocados,
one onion,
a bit of coriander
a bit of cumin,
a piece of lemon,
salt and pepper.
Crush the avocados in a bowl, cut the onion and mix it with the avocado paste.
At a pinch of coriander and cumin, add the lemon and stir it again.
To finish it off you can add salt and pepper and keep it in the fridge before served.
To let the guacamole retain it's green color.
Keep the pit in the bowl while in the fridge