Tuna salad with potatoes and mayonnaise

ingredients

     3 large potatoes
     water for cooking potatoes
     3 cans of tuna loins in own juice (3 x 150 gr)
     some pitted green olives
     1 large onion, red
     pepper
     For the mayonnaise:
     1 egg yolk
     1 clove garlic small (7 dogs)
     1 teaspoon mustard classic
     250 ml of oil
     juice of one lemon
     salt to taste

Preparation

Wash the potatoes and put them in boiling water to cover it.

Let them boil until they begin to penetrate the test with a fork, then goes through cold water and clean them.

Olives, if too salty to be put in water to remove the salt also.

Chop onion julienne, but keep a few slices for decoration.

Ii peeled potatoes cut in small cubes.

In a roomy bowl mix all the ingredients chopped and sprinkled over them pepper.

For mayonnaise, garlic clean and presses him well, and mix it with egg yolk and mustard and oil start dripping bit by bit, mixing vigorously.

Add salt to taste and occasionally lemon juice.

Drain liquid tone and add it over the ingredients in the bowl, then mix it with mayonnaise.

It came out very good salad!