NEEM CAKE Neem Cake is an Natural by product of Neem Seed Oil production. Neem Cake is used as a natural fertilizer. The quality of the neem cake is determined by the amount of oil left in it, and also the process by which the extraction was done. Neem Cake organic manure is the by-product obtained in the process of cold pressing of neem tree fruits and kernels, and the solvent extraction process for neem oil. It is a potential source of organic manure.