Manfruit

Manfruit is a magical fruit that is grown once a year by a manfruit tree. Those who consume a manfruit will greatly increase their physical attributes for a considerable duration of time. The fruit has gotten its name both for its effect as well as its distinctive characteristics. Each tree, which must be watered with blood daily, can only bear one manfruit at a time and it takes nine months for the fruit to mature. The fruit itself as it develops resembles the form of a human fetus, and matures into the form of a newborn child. The skin of the fruit has the consistency of a peach, though its color varies greatly, it typically ranges from bright red to pure white, a light pink being the most common. The inside of the fruit is a fleshy, juicy, crimson red with the texture of a pineapple. 
While Manfruit trees are self pollinating, it is possible for male Ib to manually pollinate them as well, though doing so is illegal under imperial law. Doing so can have various results, including the creation of a perfectly normal child, though it is much more likely to result in the creation of a Berry Child instead, and that Berry Child is most likely to be a Feral Berry Child.