Baked Fish and Chips

Bahan-bahan (4 porsi)

• ¼ cup low-fat buttermilk*
• 5 teaspoons Old Bay (divided)
• 1 pound cod (Pollock, halibut, or other firm, white fish fillets, cut into 4x2-inch pieces** (about 4 pieces total))
• 2 large russet potatoes (about 1 ½ pounds, scrubbed and peeled)
• 1 tablespoon extra-virgin olive oil
• 1 teaspoon minced fresh garlic (about 1 large clove)
• ¼ cup white whole wheat flour
• 2 large egg whites
• 1 cup whole wheat Panko breadcrumbs
• Lemon wedges (for serving)
• Tartar sauce or malt vinegar (for serving)