Wash the potatoes and boil in salted water. Cook over medium heat for about 20 minutes. In the meantime wash basil and drain well. Pluck the leaves from the stems and cut them into strips.
Peel and coarsely chop the garlic. Finely grate the parmesan. Finely puree basil, garlic, cheese and 30 g pine nuts with the cutting stick of the hand mixer (or in the universal chopper). Gradually add the oil.
Season to taste with salt. Drain the potatoes, rinse and let them steam a little. Wash, clean and slice the tomatoes. Roast remaining pine nuts in a pan without fat until golden brown. Clean and wash the rocket.
Peel and cut the potatoes into smaller pieces and mix them with the pesto. Arrange pesto potatoes with rocket, tomatoes and pine nuts in salad bowls.