Well, he's a tough character. Brusque, but obviously a very passionate individual who truly cares to make the world a better place, otherwise he wouldn't have put himself through so much, or given up so much. The only person he really seems to have a soft side for is Tonks, his protegee.
This tea is an attempt to blend Mad-Eye's brusque attitude with his determination as an Order member, his good heart, and his soft spot for Tonks.
This tea contains a high level of caffeine | Steep at 212° for 4 minutes.