1. Toast the bread
2. Remove the flesh of avocado and grind it with the lemon juice and 1 spoon of olive oil
3. Let´s prepare the egg: break it on a glass and add the vinegar
4. Leave for 20 minutes
5. Bring the water to boil, add the egg and wait 3 minutes until egg white is boiled and the egg yolk is tender
6. Spread avocado on the toast, add salt and pepper and the egg