Chili crisp! Goes great on everything. Umami, flavor, and texture bomb. Home made is best, but Fly By Jing is pretty good.
Along similar lines, Chinese god oil. Amazing with noodles, fish, and lots of other things. A cheater version is chili crisp mixed with black vinegar, soy sauce, brown sugar, green onion, and cilantro.
I used to drink them quite a bit, but I don’t any more sure to food allergies.
I think they’re quite useful and can even be tasty (I used to make smoothies using them). I just saw them as a convenient form of protein.
Having said that, I’ve noticed that I’m much less hungry eating whole food proteins, and so I’m actually less likely to snack and ingest less calories over all.
My mom used to make hot potato and tuna salad. It was one of my favorites growing up. It was boiled potatoes, relish, tuna, mayo, salt and pepper, served warm. Really tasty.
Tuna casserole is another tasty option.
If you want to go an Asian route, you can do tuna served on rice with some chili crisp and sliced cucumber.