Frankincense resin tea tastes bitter, but not oppressively. I add a little of it to my drink, when I crave it.
I recently made this tea and left it on my kitchen counter - it does not go bad.
I like to acquire taste for / learn about things that may be good for me, even if I may not like it initially.
You may enjoy this video:
The Frankincense Trail - Oman, Yemen and Saudi Arabia
www.youtube.com/watch?v=KHc9bKzaw-s&list=PLKXbc4lYPTKad0qMMuhAbSmftO8l-GyhV&index=2&t=4s bSmftO8l-GyhV&index=2&t=4s