Yes, it is OK to boil banana peels, and doing so is a common method for making banana tea.
Making Banana Tea
Boiling banana peels is a primary step in preparing banana tea. According to information available, you can steep the banana fruit, peel, or both in boiling water to make a mildly sweet beverage.
- Process: Boil the banana peel (or the entire banana) in water for a few minutes.
- Straining: After boiling, strain the liquid to remove the peel.
- Consumption: The strained tea is then ready to drink.
Banana tea is reported to retain many of the healthy nutrients found in bananas.