Drooble's Best Blowing Gum was a brand of chewing gum manufactured by Honeydukes Company Ltd. It let the consumer blow bluebell-coloured bubbles which would not pop for days. Described as "guaranteed never to lose its flavour," it was available in sugar-free crazyberry flavour, and possibly others as well. This gum was sold at Honeydukes in Hogsmeade and on the food trolley for two Sickles. It was also sold at Sugarplum's Sweets Shop in Diagon Alley for four sickles.