An ounce is outlined as remaining one/sixteen of a US pint, and so would be the quart. It can be used most often for liquids. In the United States, the ounce is often known as the fl. To this day I don't know why doubling this recipe went Erroneous, but https://elliottasffu.getblogs.net/47128170/5-simple-statements-about-how-many-quarts-in-1-gallon-of-oil-explained