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Farro 101: Choosing and Cooking Farro:
As farro has become more widely available, you’ll likely come across a few different varieties of farro in the grains aisle (or bulk bins) of the supermarket: whole, semi-pearled, and pearled. Pearling removes part (semi-pearled) or all (pearled) of the farro grain’s nutritious bran, to help reduce its cooking time. When I can find it, I usually opt for the “whole” (unpearled) farro variety, as it is the least processed and retains its bran, and therefore retains the most fiber and nutrients. However, the semi-pearled and pearled varieties do cook more quickly, making them an attractive option if you’re pressed for time. Alas, the type of farro isn’t always clearly labeled on the package: Some are simply labeled “farro”; others might be labeled “whole” farro or “whole-grain” farro when they are in fact semi-pearled. If you're unsure what kind of farro is inside the package, the suggested cooking times provided on the outside of the package can offer a helpful clue: Generally speaking, pearled and semi-pearled farro will cook in about half the time (20 to 30 minutes) as whole farro (45 to 60 minutes, or more).
Although navigating the wonderful world of farro at the grocery store can sometimes be a bit tricky, cooking farro is relatively easy. It's as simple as cooking pasta; it just takes a little more time. My best advice for cooking farro is simply to follow the package’s directions (some suggest soaking the farro first, which can help reduce cooking time), and start checking and tasting for “doneness” a few minutes before the lower end of the cooking time range given on the package. When it’s done, the farro should be tender, yet still a bit chewy, and retain its structure.
If you purchase your farro from the bulk bins of your local market, you likely won't have any package directions to follow once you get home, so I'll provide some basic instructions here for reference. Most directions for cooking farro follow the same general formula; this is the basic method I use to cook 1 pound of dried farro, which yields about 7 to 8 cups of cooked farro:
Rinse farro in a colander under cold running water. In a large pot, combine farro with enough water to cover by a few inches and a generous pinch of salt. Bring to a boil over medium-high heat, skimming off any foam from the surface, then turn down the heat to a gentle simmer. Cook uncovered, stirring occasionally, until the farro is just tender and still a bit chewy (but not mushy), about 45 to 60 minutes (or more) for whole farro, or about half the time for pearled or semi-pearled farro. Drain the farro in a colander and set aside until ready to use.
(For this soup, I use only 3 cups of cooked farro, so you can cook up about half of a 1-pound package [8 ounces, or about a heaping cup of dried farro] and have enough for the soup. But since cooked farro freezes well, I like to cook the entire package and freeze what I don’t use in the soup; it saves me time in the long run, getting me one step closer to soup the next time I’m craving it, or a quick side dish the next time I’m rushing to make dinner.)
Vegetarians/vegans: This soup is vegetarian if you use vegetable, not chicken, stock/broth (obviously!). However, if you use the Parmesan rind, it is not technically vegetarian: Strict vegetarians do not eat Parmesan as rennet is used in the production of true Parmigiano-Reggiano. (Learn more
here.) If this concerns you, leave out the Parmesan.