Clean the cauliflower, divide into florets, rinse on a sieve and drain. Wash and clean the zucchini, quarter them lengthwise and cut them crosswise into 2 cm long pieces. Peel and wash the carrots and cut them into 1 cm wide slices.
Arrange the vegetables on a plate. Wash the pork tenderloin, dab dry, cut into cubes of about 3 cm and fill into a bowl. For the sour cream, wash the chives, dab dry, cut into small rolls except for a few stalks for garnishing.
Stir into the sour cream, pour into a bowl and garnish with chives. Drain the cocktail sausages on a sieve, pour into a bowl. Cover prepared side dishes until used and chill.