Jarlsberg® seafood gratin - Jarlsberg

Ingredients

• 5 tbsp butter, divided
• 1 tbsp olive oil
• 2 shallots, finely minced
• 2 celery stalks, thinly sliced
• 110 g mushrooms, thinly sliced
• 1/4 cup white wine
• 1/4 cup flour
• 1 cup clam juice
• 1/2 cup milk
• 1 cup cream
• 1 tsp curry powder
• 1/4 tsp salt
• 1/4 tsp freshly ground pepper
• 150 g Jarlsberg®, grated (about 1½ cups)
• 2 kg mixed seafood
• 200 g white fish, cut into 1-inch cubes
• 1 small potato, cooked and cubed
• 1/2 cup bread crumbs
• 1/2 cup parsley, finely chopped
• 1 tbsp butter, melted