Smoked Salmon on Mustard-Chive and Dill Butter Toasts

INGREDIENTS

• 31/2 tablespoons fresh lemon juice
• 1 tablespoon lemon zest
• 2 sticks unsalted butter, room temperature
• 1 thin, long French Baguette, cut into 1/4-inch slices
• 1 tablespoon fresh dill, finely chopped
• 1/2 teaspoon freshly ground black pepper
• 1 1/2 tablespoons Dijon mustard
• 1/2 cup finely chopped chives or green onions
• 1/2 teaspoon salt
• 10 ounces of the best quality smoked salmon in medium-thin slices (Norwegian or Wild Alaskan)