Cider Vinegar Mother, 8 oz jar, initially makes one quart (32 oz) of vinegar, which you then use to build up after conversion by adding more hard cider periodically. You supply 24 oz of hard cider of your choice (homemade works best to start). Jar label comes with instructions and you will need a wide mouth glass jar of at least 64 oz (1/2 gallon) size. Beverage dispensers with plastic spigots can also work well. Over the 40 years that we have been selling these, they have been featured in many gourmet food magazines and on cooking websites!