Barchart - Sugar prices rallied sharply on Wednesday, with NY sugar posting a 3-week high and London sugar posting a 4-week high. Strength in gasoline prices is supportive for sugar, as gasoline (RBM26) surged to a 3.75-year high on Wednesday, boosting ethanol prices and potentially persuading the world's sugar mills to divert more cane crushing toward ethanol production rather than sugar, thus curbing sugar supplies.