i quit the game and then started it again. this sets you back a few steps so you gotta get the mug again etc. and then mix the potion in the right order (plant first).
i tried that but the orc can only drink the beer once sadly, so you need to get the order right the first time or you're stuck. i ended up restarting the game which set me back a few steps.
i encountered a bug at the part where you have to get the sleeping potion for the orc. if you fill the mug with beer first, you're unable to then use it on the plant.
