I know about a simple bug that allows you to duplicate any item. And that includes meat on the frying pan, potions you drink, and so on.
But I'm not some noob who would use it, like you :3
In Gothic 1, you could just beat up the merchants and take everything. In my opinion, this was a mistake. Because after chapter three, trading doesn't make sense, since you can just beat them up and take everything they have. However, you don't have to use it.
Look at all these current Gothic 1 and 2 modders. Instead of making even one decent mod that makes many things in Gothic more convenient (inventory, menu, that bar with the numbers 1-0 and quick items on them (forgot what it's called), frying meat like in Gothic 3 (not clicking each piece on the frying pan, but immediately specifying the amount you want to fry), a "take all" button in chests, inventories, etc., or, like in the community patch for Gothic 3, if there's nothing left to take from a body, you can't select it, the name simply won't appear above it, so you don't have to "feel around" a crowd of corpses looking for those you haven't looted yet), they make boring mods with boring new quests, boring new worlds, boring new storylines, boring new dialogues, boring new weapons, and so on.