Peel the shallots and, depending on the size, possibly halve them. Clean, wash and drain the mangetouts. Bring a pot of salted water to the boil and cook the sugar snap peas in it for 4-5 minutes. Pour onto a sieve, drain and keep warm. Add the pasta to the boiling water and boil for 8-10 minutes until it becomes bubbly.
Heat the fat in a saucepan and lightly fry the shallots in it. Add vegetable stock, bring to the boil and simmer for 1-2 minutes. Stir in mascarpone and parmesan and season with salt and pepper. Finally, stir in the sauce thickener and bring to the boil again briefly. Mix egg yolk and 2-3 tablespoons of cold water and stir into the sauce. Do not let it boil any more. Wash the basil, dab dry and cut into fine strips, except for a little to garnish. Stir the basil into the sauce. Cut Parma ham into fine strips. Pour the pasta onto a sieve, rinse with cold water and drain.
Wash the basil, dab dry and cut into fine strips, except for a little to garnish. Stir the basil into the sauce. Cut Parma ham into fine strips. Pour the pasta onto a sieve, rinse with cold water and drain. Place sugar snap peas in a fan shape in a deep plate and arrange the noodles on top. Pour mascarpone parmesan sauce over the pasta and sprinkle with Parma ham. Serve garnished with basil