Michael Ruhlman's Ratio is coming to the iPhone in the form of an app due out as soon as the Apple App Store can test and approve it. What it comprises: "The 32 critical ratios that form the backbone of the culinary arts, with instructions: doughs, batters, meat preparations, custards, sauces," along with an ingredient calculator, an ounces-to-grams converter, and, this being an iPhone, "ways to share your cooking on Twitter and Facebook." Ruhlman's site doesn't indicate a price, but he's mentioned on Twitter that he thinks "$4.99 is appropriate." [via Eat Me Daily]
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