For the dough, mix egg, milk and flour with the whisk of the mixer until smooth. Leave to swell for about 15 minutes.
Cleaning radishes, washing them. Cut 5 radishes into sticks, the rest into slices. Clean, wash and shake dry the arugula. Wash and halve the tomatoes.
Peel and chop the onion. Mix with vinegar, salt, pepper and 1 pinch of sugar. Fold in the oil. Mix cream cheese and crème fraîche. Season with pepper.
Heat the clarified butter in portions in a coated pan (24 cm Ø). Bake 2 golden yellow crêpes from the dough one after the other. Spread the crêpes with cheese cream, cover with radish sticks and half the rocket. Roll up u
Mix the tomatoes, the rest of the arugula, radish slices and vinaigrette. Arrange crêpe rolls on the salad.
Make sure that you roll up the crêpes with the filling tightly, then the small rolls on the plate hold together well.