There are three upgrades to the nectar machine. The "old" Unbreakable, Improved Pressing at level 5 (gives one extra bottle) and Flavor Enhancement at level 10 (increases flavor by 15%).
There's only one upgrade to the fortune cookie machine, it makes the fortunes always come out good. However there's a bug with that upgrade. It makes your handiness skill journal page go completely blank so I wouldn't do that upgrade until the handiness challenges have been completed and you don't need that page anymore.