Step 1 Place a large saucepan of water on the stove and bring to the boil. Pour in the pasta and cook until al dente.

Step 2 Place the quarg into a bowl and add the garlic, lemon zest, juice and parmesan cheese. Roughly chop the watercress and add half to the quarg, combine gently and season to taste.

Step 3 Drain the pasta and put back into the pan. Pour the watercress mixture over the pasta and combine gently. Serve into bowls and sprinkle over the remaining watercress and walnuts. Serve with crusty bread.