3 tablespoons butter
3 teaspoons minced garlic
1 1/4 cups dry bread crumbs (preferably Japanese panko)
2 tablespoons finely sliced chives
2 tablespoons sliced parsley
1/2 small onion, finely diced
1/4 cup finely diced fennel
1/4 cup finely diced celery
3 ounces large shrimp, peeled, deveined, and cut into bite-size pieces
3 ounces sea scallops, cut into bite-size pieces (see Note)
3 ounces squid, cleaned and cut into bite-size pieces
3 ounces jumbo lump crabmeat
1 teaspoon chopped tarragon
1/4 teaspoon Old Bay Seasoning
1 teaspoon Dijon mustard
2 teaspoon salt
Freshly ground black pepper
1 lemon, cut into wedges
1 cup cream
1/4 cup grated white Cheddar cheese
1/4 cup grated Parmigiano-Reggiano