Thaw the spinach in a colander. Clean and finely dice the celery, onion and leek.
Sweat in a saucepan with butter and then add the stock. Simmer gently for 15 minutes.
Now add the squeezed spinach and simmer for another 5 minutes, season with salt and pepper.
Add the cream and herbs and puree everything finely.
Preheat the oven to 200 °.
Grate the parmesan on the coarse side of the grater and shape into 8 oblong piles on a baking sheet lined with baking paper. Bake on the grill setting for approx. 3-5 minutes until golden.
Divide the dip between 4 glasses, garnish with a small mozzarella ball and a parmesan chip. Sprinkle with the parsley and serve.