The Mawhemenus Crop mod adds 2 items and 1 block:

Mawhemenus Bulb - Serves as a seed for the crop. It is currently unobtainable without the use of creative mode.

Mawhemenus Crop - The actual crop. Drops 1-2 Juicy Mawhemenus Fruit and 1-2 Mawhemenus Bulbs.

Juicy Mawhemenus Fruit - It restores 2 hunger points when eaten (1 drumstick).

FAQ:

Q: What is this purple thing?

A: It's a magical fruit. For more information, play the modpack "From Ashes".

Q: Why is this a mod?

A: Because somebody couldn't make this with Content Tweaker.

Q: Can I play with this mod without downloading the entire pack which is meant for?
A: Yes. But I suggest you also install CraftTweaker along with the following script in order to make the Mawhemenus Bulb drop from tall grass.

#modloaded mawhemenuscrop

vanilla.seeds.addSeed(<mawhemenuscrop:mawhemenus_bulb> % 3);

Q: Can I add this mod to my modpack?
A: Sure.

Q: Why does everything have a lavender color?
A: Because lavender a pretty color!

Click the image above if you want to take a look at the modpack's project page.
(If it has been released at this point and time)