Prepare the tortellini according to the instructions on the packet.
In the meantime, cut the cherry tomatoes, cucumber and onion into small pieces and place in a bowl. Add the drained and cooled tortellini to the other ingredients. Mix in the sour cream, sour cream and balsamic vinegar, season with salt (vegetable stock) and pepper.
A light and quick-to-prepare summer salad that is always gone first on barbecues.