Annona Inversa is a small Vanilla+ mod that adds a new fruit to the game, the delicious Cherimoya, which can be eaten or used to make some pretty useful new potions.

Like tropical apples, Cherimoyas drop on rare occasion from Jungle Leaves. When eaten, a Cherimoya will restore 8 hunger points and give the Haste effect for a short period. Crafting a Cherimoya with 8 Gold Ingots will yield a Golden Cherimoya, which is similar to a golden apple but with slightly different potion effects.

After consuming a Cherimoya, you will be left with large black Cherimoya Seeds. These seeds are toxic to eat, and can be used to craft a Potion of Nausea (I had no idea that Nausea Potions weren't in the vanilla game). Longer and stronger Nausea Potions are also craftable from redstone and glowstone dust respectively.

Brewing a Cherimoya into an awkward potion will yield a Potion of Inversing, a new potion effect that reverses any negative effects currently applied (Poison into Regeneration, Weakness into Strength etc.).

You can also use glowstone or redstone to make the effects of Inversing stronger or last longer, just like vanilla potions. However be warned, if you drink an Inversing potion with no negative effect for it to reverse, it will do nothing and you will have wasted a potion.

Give cheer for Cherimoyas!

Other Notes:

-This mod is free to be used in modpacks.

-I will port to newer versions in the near future, but will not backport.