In order to cook the highest tier meats in Valheim (Lox meat and Serpent meat) you'll need the Iron Cooking Station. It's now the only way to cook Lox and Serpent. This unlocks Serpent Stew and Lox Meat Pie (if you've got Barley flour in production) the two highest health foods in the game. It has 5 slots and can also cook the "smaller" meats.

You want it.