Herring in Mustard Sour Cream on Rye Bread Recipe | Epicurious

Ingredients

• 4 pickled herring fillets, sliced into 1/4" pieces
• 1/4 medium onion, finely chopped
• 1/4 small fennel bulb, finely chopped
• 1 cup sour cream
• 2 tablespoons whole grain Dijon mustard
• 2 tablespoons finely chopped fresh chives
• 1 tablespoon finely grated peeled horseradish or 2 teaspoons prepared horseradish
• 1 tablespoon fresh lemon juice
• Kosher salt, freshly ground pepper
• 8 slices dark seeded bread or rye bread, cut into squares or triangles
• Fresh parsley leaves (for serving)