Notes after 4th trial. Add extra 1-2 cloves ofgarlic, use mustard in a jar to taste. Use 500g macaroni for same amount of roux thinned slightly with 2 tbsp extra milk. (same results if cheddar reduced by 50g) Add old bay seasoning while frying garlic. Boil macaroni in knorr seasoning and two bay leaves. Add all purpose seasoning and black pepper to final mix before baking . Olive oil can be subbed in for one of the butter tablespoons if run out. realistically serves 6 hungry people as a side, 4 hungry people as a main.