How to save bland meat? (short)

Add pickled onion to it. Even if it’s not bland, add pickled onion.

If you don’t know how to make it, watch this video. That container you used to make the pickled onion - make sure to only use that container for pickling onions because the smell of vinegar and onion will inevitably seep into the container. That shouldn’t be an issue because you should always have pickled onion at the ready.