^Wainwright, Martin. Apple and grape give birth to Grapple. The Guardian. 2004-12-24 [2007-05-29]. （原始内容存档于2007-11-27）. The Grapple was patented two years ago in Washington state, nick-named apple country in the US, by a family of growers who have experimented with apple breeds for the past 98 years. Using a secret process, mature examples of the Washington State Extra Fancy Fuji apple are immersed for several days in a marinade which transforms their flavor to that of a Concord grape.
