Rooibos is full-bodied with a flavor that contains “smoky, sweet, woody, grassy, vanilla, floral, geranium, honey, herbal, and caramel” notes, according to Teatulia. Because it’s so rich, rooibos is ideally suited for cooking, and can be used to flavor cookies ice cream, yogurt, sauces, beverages, and even marinades — it pairs especially well with caramelized onions.