check this out:

https://www.reddit.com/r/tinnitus/comments/lp7n76/this_guys_tinnitus_lowered_to_110_by_eating_8/

bananas are a big source of potassium and phosphorus

someone else has been nagging me to try coconut water, which is, afaik, diluted coconut milk:

https://www.eatthismuch.com/calories/coconut-milk,2696

also a very high source of potassium