What makes a Tea Earl Grey? It's the addition of Bergamot which is a citrus-like natural flavoring. Our Certified Organic Earl Grey teas all begin with a base of Organic Tea or Organic Rooibos to which we have added natural Bergamot flavoring. Organic Earl Grey is the strongest cup while the Earl Grey Imperial is milder as it is on a Darjeeling base. Our Baroness Grey has a slight note of Orange.