Reward offered for missing bourbon US authorities are offering a $US10,000 ($A11,014) reward for information that helps authorities solve the disappearance of hundreds of bottles of pricey bourbon. The 65 cases of 20-year-old Pappy Van Winkle bourbon and nine cases of 13-year-old Van Winkle Family Reserve rye were taken from the Buffalo Trace Distillery at Frankfort, Kentucky, in mid-October. The missing whiskey is valued at more than $US26,000, and the case has become a compelling mystery in a state that produces 95 per cent of the world's bourbon. Franklin County Sheriff Pat Melton said on Monday the reward could provide "a heck of a Christmas" for someone who helps crack the case. Melton says a crime stopper's group put up $US1000, but he declined to identify any other donor. The sheriff says his detectives have interviewed more than 100 people.