Spinach and Strawberry Salad with Poppy Seed Dressing | America's Test Kitchen

Ingredients

• 1/2 cup red wine vinegar
• 1/3 cup sugar
• Salt and pepper
• 1/2 red onion, sliced thin
• 1 tablespoon poppy seeds
• 1/2 cup sliced almonds
• 1/4 cup vegetable oil
• 1 teaspoon dry mustard
• 1 pound strawberries, hulled and quartered (2 1/2 cups)
• 1 romaine lettuce heart (6 ounces), torn into bite-size pieces
• 5 ounces (5 cups) baby spinach