Cut chicken into small pieces and marinate with mustard, chopped sundried tomatoes, paprika, chopped garlic, nutmeg, parsley, salt, pepper and chilli (optional).

Put a pan of salted water to boil.

Meanwhile, remove the green leaves from the leeks and cut the stems in half.
Slice the sections lengthwise to the centre of the leek.

Cook it for 2 minutes in boiling water, put them in cold water to stop cooking.

Heat the oil in a frying pan and brown the chicken pieces.

Spread a leek leaf lengthwise, spread a spoonful of chicken on the bottom right corner of the leaf.
Fold the corner towards the left edge of the sheet to form a triangle and bring the triangle upwards and fold to the right edge.
Using a pair of scissors or a knife to cut off the excess leek that could protrude from the triangle.

You can cook the triangles with a knob of butter if you want to brown them.