Defrost the puff pastry slices. Clean, wash and cut the celery into pieces. Bring white wine and 50 ml water to the boil, steam celery in it for about 7 minutes, take it out and let it cool down.
Cut the puff pastry slices in half and roll out 4 squares of approx. 12x12 cm on a lightly floured work surface. Dice camembert, mix with celery and spread on the puff pastry. Whisk the egg yolk and cream, spread the edges of the pastry and whip together.
Place on a baking tray lined with baking paper, brush with remaining egg yolk and bake in a preheated oven (electric oven: 225 ° C/ gas: level 4) for approx. 12 minutes. In the meantime, clean, wash and pluck the salads bite-sized.
Wash the cherry tomatoes, cut in half. For the vinaigrette, beat 3 tablespoons of water with vinegar and oil. Season to taste with salt and pepper. Arrange puff pastry rolls with salad on plates. Sprinkle with vinaigrette, serve with currant jelly extra.