Make Restaurant-Quality Lobster Mac And Cheese At Home

Ingredients
½ cup (125 ml) butter, divided
1 leek (½ cup), chopped
2 cloves garlic, minced
1 stalk celery (⅓ cup), finely chopped
½ tsp fresh thyme, chopped
¼ tsp nutmeg
½ tsp black pepper, preferably freshly ground
¼ cup (63 ml) white wine
3 tbsp (45 ml) all-purpose flour
3 cups (750 ml) 18% table cream
1 cup (250 ml) fish stock
1½ cups (375 ml) shredded Gruyère, divided
1½ cups (375 ml) shredded white cheddar, divided
1 can (320 g) canned minced lobster meat, defrosted
150 g Canadian lobster, cut into ½-inch chunks
1 cup (250 ml) Parmesan Reggiano, grated
1 cup (250 ml) panko bread crumbs
7 cups (1.75 L) cooked medium shell pasta noodles