Some chocolate-lovers in the United States are complaining about the substitution of cheaper vegetable oils for cocoa butter in candy.Sharon Leitner of Cincinnati told ABC News that she noticed about a year ago that Take 5, her favorite confection, had developed a waxy and artificial taste. When she checked the ingredients, she discovered that cocoa butter was no longer listed.It just didn't taste like it used to, she said.Judy Ganes, head of J. Ganes Consulting in Katonah, N.Y., said there is a big reason candy makers like Hershey, which manufactures the Take 5, have cut down on their use of cocoa butter: Prices have more than doubled since 2006, with a ton of African butter going from $4,000 to $8,100. ...