STEP 1 : Place in a bowl STICAP harissa, oil, vinegar, a glass of water and salt. Mix everything.
STEP 2 : Cut 20 slices of bread. Dip the slices one at a time into the mixture and place on a plate.
STEP 3 : Put the cooked egg in boiling water for 5 minutes.
STEP 4 : Put a not completely teaspoon full of STICAP Mechouia salad, a cube of boiled egg and a bit of tuna on each slice.