Oysters Rockefeller Recipe

Ingredients (13)

• 8 tablespoons (4 ounces; 115g) unsalted butter, softened and divided
• 2 large shallots (4 ounces; 115g), thinly sliced
• 2 celery ribs (3 1/2 ounces; 100g), thinly sliced, plus 1/4 cup (1/4 ounce; 6g) celery leaves, divided
• 1/2 fennel bulb (3 1/2 ounces; 100g), cored and thinly sliced, fronds reserved
• 4 medium garlic cloves, thinly sliced
• 3 scallions (2 ounces; 60g), white and green parts divided and thinly sliced
• Kosher salt
• 1 tablespoon (15ml) absinthe (optional, see note)
• 3 cups (1 1/2 ounces; 40g) fresh parsley leaves
• 1/2 cup (1 ounce; 30g) panko bread crumbs
• Rock (ice cream) salt (see note)
• 24 fresh oysters, scrubbed
• Lemon wedges, for serving