Coconut vinegar is used in a number of dishes of Goan cuisine as a souring agent and a flavour -enhancer. It's also used in preparing the desi Goan alcoholic drink - coconut feni.
Vinegar is an acidic liquid that is made by fermentation of foods containing ethanol (like wine and rice) or natural sugar
Toddy vinegar or coconut vinegar goes into making delectable Goan delights like Xacuti and Vindaloo.