Olive leaves are known for their antioxidant and anti-inflammatory properties, as well as their immune boosting and blood pressure lowering effect.
Sweet fennel aids digestion and relaxes gastrointestinal system, but it also and makes the tea more delicious and gives balance to olive leaves' slight bitterness.

All in all, a healthy and tasty combination! That and much, and more in a cup of simple, herbal tea. To make it, I just poured hot water over fresh olive leaves and fennel herb and let it sit covered for 5-10 minutes.