1) In a saucepan, add water, vinegar and salt and bring to the boil. 
2) Break the eggs into small bowls.
3) As soon as the water boils, slowly put the eggs in, put the lid on and lower the heat.
4) Wait for 1-3 minutes and with a slotted spoon remove the egg from the water and place it on paper to dry.
5) Melt the avocado with a fork and make the taste with the lemon juice, chives and salt.
6) In a frying pan, add the butter to melt and place the bread so that it gets a nice color.
7) Transfer the cream cheese to a pastry bag.
8) Place the avocado, cream cheese, salmon and poached egg on the bread and garnish the dish with the rocket, cherry tomatoes and chives.