Clean the celery and radishes (put aside some greenery from the celery for garnishing) and wash them. Cut the celery into pieces about 10 cm long. Separate any remains finely. Chop or dice the radishes
Mix the curd and possibly milk until smooth. Fold in radishes and possibly pieces of celery. Wash the cress, cut from the bed and fold into the quark
Season quark with salt and pepper. Use a spoon or piping bag (wide spout!) to fill or squirt into the celery sticks
Spread slices of bread with butter and cut them diagonally in half if you like. Arrange the celery stalks with the bread on 4 plates. Garnish with some celery green
Drink: cool apple juice or juice spritzer