Salmon Burgers

Name: Salmon Burgers
Prep time: 30 min
Cook time: 10 min
Total time: 40 min
Cuisine: American
Ingredients: 3/4 cup (180 ml) mayonnaise; 4 tsp (20 ml) lemon juice; 4 tsp capers, chopped; 1 small clove garlic, finely chopped; 1 1/2 lb (675 g) skinless salmon, finely chopped; 2 green onions, finely chopped; 1/3 cup (40 g) breadcrumbs; 1 egg, lightly beaten; 2 tbsp chopped parsley; 2 tbsp (30 ml) mayonnaise; 2 tsp (10 ml) lemon juice; 1 tsp dry mustard; 6 hamburger buns; 6 leaves lettuce; 1 English cucumber, thinly sliced lengthwise