The stand needs Brewing Scrolls as formulae to produce new types of potions (permanent). Only one potion can be mixed at the same time.
It's possible to get the scrolls before starting the quest, but they only display in the mixing stand. Also, each scroll is independent, one doesn't need to get them in order.
The Brewing Kit doesn't work with it.
List of all mixed potions + XP strategy Edit
The 3rd scroll replaces a tree patch randomly (any type of tree). The lumberjack will announce when players find it by clicking on him (he can't "chop" and harvest the scroll).
The 5th scroll can be found when sending Workers for ingredients with a chance of 1/30 per worker.
The 6th scroll can be found from randomly opening either oil barrel.
The 7the scroll can be obtained from the vendor for 1000 bronze, silver, iron, and gold bars.
What each column includes for the "XP strategy":
- The XP column (column 6, Mix XP) is the XP you'll receive from brewing and drinking that mixed potion.
- The material potion's XP in the table below (column 7, Mat. XP) is the XP you'll receive by only brewing the regular potions (and not drinking them).
- The raw material's XP (column 9, Raw Mat. XP) is the received XP when a player decides, after brewing the required regular potions, to just drink them instead of brewing a mixed potion.
- If brewing the regular potions alone gives more XP than the 'total XP by converting them into a mixed potion' (column 8, Total Mix+Mat.), then it's not recommended to brew the mixed potion, instead it's recommended to drink the regular potions one by one. (In other words, XP-wise it is not worth it to convert materials into a mixed potion.)