Whole-Wheat Couscous with Watercress Recipe

Ingredients

• 2 Tbsp. extra-virgin olive oil
• 1 Tbsp. minced shallots
• 2 tsp. each sherry vinegar and fresh lemon juice
• 1 tsp. Dijon mustard
• 1 tsp. minced fresh garlic
• ¾ tsp. each kosher salt and black pepper, divided
• 1 cup each low-sodium chicken broth and water
• 1 cup dry whole-wheat couscous
• 1 ½ cups stemmed, packed watercress
• 1 Tbsp. minced lemon zest