A teaspoon of honey neutralizes the bitterness of grapefruit and gives a tangy sweetness to Grapefruit-Poppy Seed Vinaigrette.
Combine grapefruit juice, canola mayonnaise, vinegar, honey, and grapefruit rind in a bowl, stirring with a whisk. Gradually add grapeseed oil, stirring constantly with a whisk. Stir in poppy seeds, salt, and pepper. Drizzle over baby spinach.