Carolyn Keene 
Mystery on the Menu [EPUB ebook] 

Georges prize-winning Raspberry Chiffon Cake has earned her, Bess, and Nancy a week at the Wolfe Culinary Institute in upstate New York. But soon after their arrival, Nancy discovers that ambition, jealousy, and greed are also on the menu. Attempted murder provides plenty of food for thought, but thats a mere appetizer to the dangers to come. In her search for the chef with a taste for terror, Nancy knows shell have to watch her diet and watch her back. The kitchen is crammed with suspects, and tensions are fast coming to a boil. The knives are all sharp, the ingredients are all poison, and the final coursemost likely fatalhas yet to be served!