Omelette rolls with Jamón de Huelva and mozzarella

INGREDIENTS (serves 4)
8 slices of Jamón de Huelva
4 eggs
4 tablespoons mayonnaise
5 thin slices of mozzarella
butter, salt

Break the eggs into a bowl and beat them with a pinch of salt.
Place a large non-stick pan on the heat and grease it with a knob of butter. When
it starts sizzling, add the eggs and cook the omelette without stirring it, turning
it just once. Place it on a sheet of baking paper and allow it to cool. Cover a
sufficiently large plate with some cling film and then place the omelette on top of
it. Spread two tablespoons of mayonnaise over the entire surface of the omelette,
followed by the well-drained mozzarella, the whole slices of Jamón de Huelva
and another layer of mayonnaise.
Roll up the omelette with the help of the film, then wrap it in the film, twisting the
ends like a sweet, and place it in the fridge for three hours. After three hours,
slice the roll with a sharp knife and serve.