In Ngandajika (Democratic Republic of Congo), given the state of our soils, farmers and researchers resort to chemical fertilizers, such as NPK, to achieve the expected yield. Jatropha curcas by-products used in composting would be a strategic solution to this dilemma. Jerky (Jatropha curcas L.) is a plant of the Euphorbiaceae family. Pressing its oil-rich seeds produces a by-product, the cake, the accumulation of which causes an environmental problem. To address this problem, the use of this by-product in compost was considered and is the subject of this study. Five types of compost were developed using cake alone or combined with animal waste (small ruminant droppings or poultry droppings). The composts were then tested on the yield of cabbage apple. The experimental design used is completely randomized, comprising 6 treatments repeated three times each. The study showed that mixing cake with 10% of small ruminant droppings resulted in good quality compost with a high nitrogen and potassium content (Ntot 1.83%; Ktot. 1.76%). Compost made with Jatropha cake and 20% of small ruminant droppings resulted in the best yield in both total biomass and apple biomass. The different composts made from Jatropha curcas cake significantly improved the chemical characteristics of the soil. These different results therefore show that cake is a good material for the production of compost. This recovery therefore makes it possible to avoid the unnecessary and harmful accumulation of this product and helps to solve the environmental problem it constitutes.