Nigella Lawson's Spaghetti with Marmite

Serves 4–6

Ingredients

• 375g dried spaghetti
• 50g unsalted butter
• 1 tsp Marmite or more, to taste
• freshly grated Parmesan cheese, to serve

Method

• Cook the spaghetti in plenty of boiling salted water, according to the packet instructions.
• When the pasta is almost cooked, melt the butter in a small saucepan and add the Marmite and 1 tablespoon of the pasta water, mixing thoroughly to dissolve. 
• Reserve a cup of pasta water; then drain the pasta and pour the Marmite mixture over the drained spaghetti, adding a little reserved pasta water to amalgamate if required.
• Serve with plenty of grated parmesan cheese.