This is new to me which I saw on the morning tv show. Fermented fruit juice is a type of fertilizer that is home made. The ingredients are fruits and molasses or brown sugar. The preparation is simple - cut the edible part of the fruits and place it in a container before applying brown sugar as topping. Cover the container with cloth or newspaper to let some air inside the container. After a week there will be fluid that smells like alcoholic but sweet. That fluid is the FFJ - fermented fruit juice that can be sprayed to the trees and plants for better quality of harvest.