Wash potatoes thoroughly and boil in water for 20-25 minutes. For the tomato quark, dab the tomatoes dry and cut them into small pieces. Halve chillies lengthwise, remove seeds and chop finely. Mix 250 g quark, chilli, tomatoes, sour cream, ketchup and tomato paste and season to taste with salt, pepper and paprika.
For the herb curd, wash the herbs and pat dry. Cut the chives into thin rolls, setting aside 3 tips for garnishing. Finely chop chervil and parsley leaves. Cut the cress from the bed.
Finely mash the sheep's cheese with a fork. Mix cheese, 250 g quark, yoghurt, herbs and cress and season with salt, pepper and possibly some lemon juice. Drain the potatoes, rinse briefly in cold water and sprinkle with coarse sea salt.
Serve with the dips.