Fried Herring in Pickling Liquor | Saveur

Ingredients

• 8 whole herring, small trout, or bluefish, floundered (see note above)
• Kosher salt
• Ground white pepper
• 1⁄3 cup Dijon mustard
• 2 tbsp. minced dill
• 2 tbsp. minced flat-leaf parsley
• 8 tbsp. unsalted butter
• 2 cups sugar
• 2 1⁄2 cups distilled white vinegar
• 1 medium red onion, thinly sliced crosswise
• 1 large carrot, thinly sliced crosswise
• 10 whole allspice berries
• 10 whole black peppercorns
• 5 whole white peppercorns
• 2 bay leaves
• Boiled potatoes and rye toast, for serving