1. A feedback system for controlling texture of a food product in a continuous manufacturing process, wherein said system comprises: a food pre-processing unit; a food processing unit; a texture measuring tool positioned downstream from said food processing unit, wherein said texture measuring tool is configured to quantitatively measure a texture attribute of said food product that is output from said food processing unit by use of a laser to excite a portion of a food product and an acoustic capturing device to capture an acoustic signal generated by the laser excitation; said texture measuring tool configured to measure said texture attribute non-invasively; said texture measuring tool further configured to convert said acoustic signal from a time domain to frequency domain; and a controller, said controller controlling a plurality of input parameters to said food processing unit and said food pre-processing unit based on input from said texture measuring tool.