Pastitsio

Name: Pastitsio
Cuisine: European, Mediterranean, Greek
Ingredients: 175 gram (6 ounce) macaroni; 450 gram (1 pound) minced beef; 1 medium onion, finely chopped; 400 gram (14 ounce) tin chopped tomatoes; 2 tablespoons tomato purée; 2 teaspoon Oregano; ½ teaspoon Ground Allspice; ½ teaspoon Minced Garlic; ½ teaspoon Sea Salt; 300 millilitre (½ pint) semi-skimmed milk; ¼ teaspoon Cayenne Chilli Pepper; 175 gram (6 ounce) Cheddar cheese, grated; 1 sachet White Sauce