The spices are first crushed with rollers, without heat, which preserves their vibrant flavours. The crushed spices then go through our distillation and extraction process: they are passed through an extraction vessel where the ethyl acetate (the solvent) is percolated in order to obtain the maximum volume of spice extract. The extracts are passed through a de-solventiser, where the solvent is removed using vacuum suction so as not to adversely affect the flavours. All that remains at this stage is the highly-concentrated oleoresin (oil + resin). Based on years of in-house research, we have developed the optimum concentration of Spice Drops®. Accordingly, the oleoresin is mixed with emulsifier polysorbate 80 to yield the final product in the desired ratio suitable for culinary use.