Firstly, talk to to Blurberry'. He's located on the second floor of the Grand tree, he'll give you some ingredients of a kind of Coctail, and a book that tells you how to make it. If your lucky, you'll get the ingredients of a Fruit Blast, if not, make the other coctail you got and get a Pineapple, 2x Lemon and a Orange. Use the Pineapple on the shaker, then the Orange, then the Lemon, and pour that in the coctail glass, then slice the second lemon and use that on the unfinished coctail. If you have your fruit blast, use some ashes on it.