Boston Lettuce and Endives Salad

Ingredients

• 4 cups (100 g) Boston lettuce leaves (about 1 small head), shredded
• 2 white endives, halved and broken into leaves
• 2 red endives, halved and broken into leaves
• 1 red apple, cored and cut into thin wedges
• 1/2 cup (90 g) red grapes, halved
• 1/2 cup (50 g) roasted walnuts
• 1/4 cup (60 ml) mayonnaise
• 2 tbsp (30 ml) cider vinegar
• 1 tbsp (15 ml) whole-grain mustard
• 1 tbsp (15 ml) maple syrup
• 1 small garlic clove, finely chopped