Pasta With Yogurt Pesto

First make the pesto. Place the walnut pieces, garlic, lemon zest and herbs in a food processor and blend until finely chopped.

Gradually add the yogurt to form a smooth sauce. Season with a little black pepper. Chill in the fridge until required. This will keep covered in the fridge for up to 2 days.

Trim the asparagus tips. Bring a large pan of salted water to the boil. Add the spaghetti and cook according to the packet instructions.

Five minutes before the end, heat a large frying pan and add the chilli flakes, bouillon powder and water. Stir to dissolve the powder then toss in the asparagus tips and saute for 3-4 minutes.

Drain the spaghetti and tip into the frying pan with the lemon juice. Pour over the pesto sauce and toss thoroughly.

Serve immediately with lemon wedges and salad. For additional flavour you could sprinkle over a little freshly grated parmesan cheese.