Cook the noodles in plenty of salted water according to the instructions on the packet until they are firm to the bite and drain in a colander. Halve the melon, scrape out the seeds with a spoon. Peel the melon halves and the pulp first in slices and then into pieces about 1-2 cm Heat the butter in a pan and simmer the melon pieces over a low heat for about 2 minutes.

Add tomato paste and cream sour cream and stir. The melon pieces should not be crushed. Season with salt, pepper and lemon juice. Mix in the pasta on plates sprinkle.