Vineger is a solution of acetic acid and water. Vinegar is a versatile liquid that results from the fermentation of ethanol. There are many different types of vinegars, depending on what liquid the ethanol has been fermented in. For example, what we call white vinegar is brewed through oxidizing a distilled alcohol. Apple cider vinegar is made from apple must, which is the freshly pressed apple with its various solid components (pulp, skin, stem, etc.), and sold unfiltered.