A METHOD OF MANUFACTURE OF A CRUMB COATED FOOD PRODUCT COMPRISING THE STEPS OF: FORMING AN AQUEOUS MIXTURE COMPRISING: A FLOUR MIXTURE COMPRISING ONE OR MORE FLOURS, SODIUM BICARBONATE, OPTIONAL ADDITIVES SELECTED FROM PROCESSING AIDS, SALTS, COLOURANTS AND WATER; ADDING THE MIXTURE INTO AN EXTRUDER; ADDING AN AQUEOUS GELLING AGENT TO THE EXTRUDER; EXTRUDING THE RESULTANT MIXTURE AT A TEMPERATURE GREATER THAN 100°C TO FORM AN EXTRUDATE; ALLOWING THE EXTRUDATE TO EXPAND TO FORM A POROUS PRODUCT; DRYING THE PRODUCT, AND MILLING THE DRIED PRODUCT TO FORM A CRUMB.