• Michael Ruhlman's Ratio App - a calculator that helps you figure out how much of each ingredient you need in order to customize a recipe to serve as many as you need. Have a recipe that says "Serves 6" but you have 21 people coming? Ratio App will help you figure out how much to make.
• Wine.com - find, learn about, and buy more than 45,000 wines right on your iPhone/iPod Touch and have them delivered to your doorstep. (I ordered a case of wine while I was riding the bus!!)
• CookWell - an app for beginner/noncooks; the easy lessons ("modules") teach you how to shop, plan a menu, and create easy, healthy meals and snacks.
iPhone Apps For The Home Cook: Part IV
Three New iPhone Apps For the Home Cook - Part III
More iPhone Apps for the Home Cook - Part II
iPhone Apps For The Home Cook - Part I
TasteTimer iPhone App: 300 Settings for Tea, Coffee & Food
iPhone App: Pastatime