On past tours if I wanted to add flavor or cover up a bad natural flavor, bought concentrated liquid flavor in a small bottle, only a couple drops can add a lot of flavor. In the grocery store, look on the shelf near the koolaid or lemonade mix.
This is the kind of stuff I am talking about.
https://www.amazon.com/Icee-Liquid-E.../dp/B00DHJZRNG
In Canada I bought something similar, labeled ZAZ.
https://www.compliments.ca/en/produc...-orange-48-ml/
There are several other brands.