- KING'S CROWNWhether sun or snow, whether spring or autumn, whether a leisurely end to the day or sport - our immune system is always challenged. With our King's Crown for your immune system tea with vitamin C you support your immune system and contribute to its normal function. The sour-sweet composition of our tea combines apple, red and white hibiscus and is rounded off by the fruity taste of sea buckthorn berries. Treat yourself to pleasurable moments with every cup.