Have you noticed how the more succinct a book’s title is the longer the sub-title is? An example is Michael Ruhlman’s new book on cooking titled Ratio: The Simple Codes Behind the Craft of Everyday Cooking. I’m sure this title to sub-title ratio is more a publisher’s call than the author’s, but it was the first thing that struck me on receiving the book.
Ruhlman is right. In the book’s introduction he defines a culinary ratio as, “a fixed proportion of one ingredient or ingredients to another.” For example, his ratio for vinaigrette is three parts oil to one part vinegar – which is the same basic ratio I use. One of the great things about cooking ratios that they make it easy to scale to suit the crowd. So if I’m whipping up a vinaigrette for myself I’ll use three teaspoons of oil and one teaspoon of vinegar (or other acid) plus flavorings. If I’m serving salad to a dozen people I bump the quantities to three quarters cup of oil and one quarter cup of acid.
It’s not always that simple (nor does the author claim it is). You still need to know how adding mustard to vinaigrette will affect it or what sorts of herbs go best with red wine vinegar (thyme, parsley, sometimes shallots). If you’re baking bread it helps to know that substituting some milk (or sour cream) for the water will produce a more tender result. But having some basic ratios as a starting point will provide a tremendous boost to your culinary endeavors and reduce the guess-work (and number of mistakes) you’ll make when experimenting.
In 230 pages, Ratio covers doughs and batters, stocks, sausages, sauces, and custards and provides 33 basic ratios. In addition, Ruhlman offers suggestions for variations and it is perhaps the variations – “Cream Soups Using Any Green Vegetable,” for example – that provide the greatest value because they teach how to make use of the ratios in practice.