Salad pasta with tuna and onions

For the recipe You will need:

1 glass pasta (rigatoni)

1 tuna (canned in own juice) - Bank

3 PCs egg (boiled hard-boiled)

1 cheese (grated) - a handful

1/2 PCs onions (sweet)

1 tsp. mustard

mayonnaise - to taste
some mayonnaise to choose? we'll show

1/2 PCs lemon juice

Pasta, better horns or some other small, boil, let them cool slightly, otherwise the cheese, which we we shall RUB the top will melt, and it will last for quite indecent.

A little sweet onion will not interfere with any salad, and if his visual acuity to add a little more mustard. Add a couple tablespoons of mayonnaise, and the final touch - the juice of half a lemon. Stir and let sit.