Smoked Salmon and Watercress Pesto Crostini

Name: Smoked Salmon and Watercress Pesto Crostini
Prep time: 5 min
Cook time: 15 min
Total time: 15 min
Yield: 40 pieces
Ingredients: 1 lemon; ½ tsp whole black peppercorns; 8 oz ricotta cheese; 1 oz honey; 1 tsp lemon juice; 3 oz Parmesan cheese; 2 oz watercress; 1 oz chopped walnuts; 3 garlic cloves; 1 tsp lemon juice; 15 mint leaves; ½ tsp salt; 5 oz olive oil; 1 baguette; 4 oz smoked salmon; 4 oz red grapes