Zucchine Sott'Olio

I recently had the pleasure of lunching at the Oakland home of Rosetta Costantino. Rosetta's been teaching how to cook the foods of her native Calabria for years, and her extensive knowledge of this much overlooked regional cuisine is now lovingly and gorgeously documented in a new book.

I, myself, have some Calabrian heritage. My mother's family is a mini-melting pot from three regions of Southern Italy. Her mother's mother's family immigrated from Benevento, not far from Napoli, and her mother's father's family came from a small mountain town in poor, rural Abruzzo, the "calf" of the boot. Her father's parents, however, both hailed from Reggio di Calabria, the very tippiest toe of the boot, pointing its way to Sicily. It is the Abruzzese branch that we are most closely aligned with, though, and so I remarked to Rosetta that I didn't know much about about Calabrese food.

Or so I thought. With dish after dish, Rosetta presented flavors that were fresh and yet immediately familiar. In particular I was intrigued by some crostini topped with tangy, zingy zucchini with hot peppers and mint, preserved in oil. The preservation technique utterly changed the texture of the zukes, giving them almost a crunch and squeak as you snapped through the pieces. I was smitten, and I knew I couldn't wait to make it myself.

Zucchine Sott’Olio

Zucchini Preserved in Oil with Hot Peppers, Garlic, and Mint

Excerpted with permission from My Calabria: Rustic Cooking from Italy’s Undiscovered South by Rosetta Costantino , W.W. Norton & Co., Inc. 2010

5 pounds (2¼ kilograms) large zucchini, preferably 2 to 3 pounds (900 grams to 1.4 kilograms) each

½ cup (70 grams) kosher salt
3 cups (750 milliliters) white wine vinegar
¼ cup chopped fresh mint
5 garlic cloves, sliced crosswise
3 or 4 small fresh hot red peppers, or to taste, sliced crosswise
½ cup (125 milliliters) extra virgin olive oil, plus more for topping

Cut the zucchini crosswise into 3-inch (8-centimeter) pieces. Cut each piece in half lengthwise, then cut out all the seeds and spongy pulp from the center. Slice each section crosswise 3?16 inch (4½ millimeters) thick. (A mandoline or other manual vegetable slicer is helpful for this.)

Make layers of sliced zucchini and salt in a large bowl, then toss well. Macerate for 12 hours to draw the water out of the zucchini. Drain the zucchini, then squeeze a handful at a time to remove excess water.

Place the zucchini in a heavy nonreactive pot and add the vinegar and 1 cup (250 milliliters) water. The liquid should barely cover the zucchini.

Bring to a boil over high heat. Stir to redistribute the zucchini, then reduce the heat to medium and cook until the zucchini slices are cooked through but still whole, about 5 minutes. Do not allow them to break apart. Smaller zucchini will take less time.

Drain the zucchini and put them in a large colander. Top them with a heavy weight, such as a pot filled with water, to squeeze out the liquid. Let the zucchini drain under the weight for 15 minutes.

Lay several clean kitchen towels on a table covered with cardboard. Arrange the zucchini slices on the towels, spreading the slices apart. Let dry at room temperature until they feel a little leathery and are no longer damp, 24 to 48 hours. They will shrivel considerably.

Place the zucchini in a bowl and toss with the mint, garlic, hot peppers, and the ½ cup (125 milliliters) olive oil. Taste for salt and let the mixture marinate at room temperature for a day.

Transfer the zucchini to a 1-pint (½-liter) glass jar. Pack them in tightly, pushing them down with a fork or spoon to remove any air gaps. Top with olive oil so they are completely submerged. Cover and refrigerate for at least 2 weeks before sampling to give the zucchini time to absorb the seasonings.

Bring them out of the refrigerator about an hour before you plan to serve them to allow the oil to liquefy. Return any leftover zucchini to the refrigerator, topping with oil so the zucchini remain completely submerged. If kept submerged in olive oil and refrigerated, the zucchini will last for up to 6 months.

Makes about 1 pint (½ liter)

Sean Timberlake is a professional writer, amateur foodie, avid traveler and all-around bon vivant. He is the founder of Punk Domestics, a content and community site for DIY food enthusiasts, and has penned the blog Hedonia since 2006. He lives in San Francisco with his husband, DPaul Brown, and their hyperactive terrier, Reese.

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