A Fruit blast is a Gnome cocktail which heals 8 hitpoints. Players can make it at 6 Cooking, which grants 50 Cooking experience. It requires a Pineapple, a Lemon, Lemon slices, an Orange, a Cocktail shaker and a Cocktail glass to make. Players can buy these ingredients at the Tree Gnome Stronghold (for example in Heckel Funch's shop). A Cocktail glass may also be obtained from drinking a premade cocktail from the bar.
When Ashes are added to a Fruit blast during the quest Recipe for Disaster, it becomes a Dirty blast, which is one of the items needed for the quest. (You cannot add the ashes until after the quest begins and Premade Fruit blasts will not work!)