A METHOD TO PRODUCE FLAVOR ENHANCER COMPRISES THE STEPS OF HYDROLYZING PROTEIN SOURCE IN PRESENCE OF CATALYSTS AT AN OPERATING TEMPERATURE OF 25°C TO 60°C AND PH 4 TO 8 TO FORM HYDROLYSTATE: OR USING STRONG ACID ON DEFATTED PROTEIN SOURCE AT HIGH TEMPERATURE ABOVE 95°C; MAINTAINING THE PH OF THE HYDROLYZING PROCESS; DEACTIVATING THE CATALYSTS IN THE HYDROLYSATE; ADJUSTING PH OF THE HYDROLYSATE TO 3.5-4.5 WITH CALCIUM CARBONATE OR ACID; AND FILTERING THE HYDROLYSATE THROUGH LAYERS OF ACTIVATED CARBON AND/OR CALCIUM CARBONATE TO OBTAIN THE FLAVOR ENHANCER.