Open Face Smoked Salmon Finger Sandwiches with Herbed Horseradish Cream Cheese

INGREDIENTS

• 1 1/2 tablespoons chopped fresh chives
• 6 fresh chives, cut into twenty-four 1-inch pieces, for garnish
• 8 ounces thinly sliced smoked salmon
• Zest of 1 lemon
• 2 teaspoons prepared cream-style horseradish
• 1/4 teaspoon freshly ground black pepper
• 1/4 teaspoon kosher salt
• 1/2 bunch watercress, stems removed
• 4 slices pumpernickel bread
• 2 teaspoons drained capers, coarsely chopped
• 5 ounces cream cheese, at room temperature