French-Style Mussels

Ingredients

• mussels - 1 kg. black, fresh
• heavy cream - 6.8 fl oz (200 ml)
• butter - 1 tbsp.
• olive oil - 1 tbsp.
• garlic - 4 cloves
• onion - 1/4 medium - sized onion
• celery - 1/2 stalk with leaves (or dill)
• lemon - 1 pc.
• white wine - 4 tbsp (60 ml)
• salt - if necessary (depends on the saltiness of the mussels)
• black pepper - 2 pinches (optional)