Cook the pasta al dente as usual (pull in the dressing), drizzle with a little olive oil and let cool. Wash and halve the cocktail tomatoes, cut spring onions into rings, Parma ham into strips, cooked asparagus into 2 cm pieces, cut mozzarella into cubes. Pour everything into a large bowl.
For the dressing, mix the yogurt with the pesto and season with salt, pepper, sugar and lemon juice.