Error: The Join Avenue page has some areas of wrong text in the wrong areas. For "Power Lunch F", it says "The Pokemon who eats this has its Sp.Def EVs raised high. - Increases EVs by 20", and in my Black 2 game, it says "It raises the base Speed stat a lot when a Pokemon eats it."
Link: http://www.serebii.net/black2white2/joinavenue.shtml