Castor Oil Cake is also commonly called as Castor Cake. Castor Oil Cake is produce by crushing castor seeds in expeller to extract oil from it in a control temperature with help of steam. Castor Oil Cake is one of the most versatile natural manures. It is truly organic manure which enhances the fertility of the soil without causing any damage or decay. It is enriched with the three big elements vital and conducive to the proper growth of crops - Nitrogen, Phosphorus and Potassium.