One unorthodox way we’ve discovered to keep food from rotting is by storing it in your Death Chest. This is the small sack that you leave behind every time your character dies. Any food that’s kept in this sack will have its rot timer frozen. As long as you leave one item behind...
Once it falls to its death, find the body and collect the Gold Keys. Now, go away and return to the same place after a couple of seconds for the Black Marketeer to respawn. Repeat this to farm an infinite amount of Gold Keys in Palworld. It will also farm you tons of Gold Coins ...