PreparationMake pickling liquid: Bring pickling-liquid ingredients to a boil in a 3-quart nonreactive saucepan over moderate heat, stirring until sugar is dissolved. Transfer to a 4-quart nonreactive bowl and cool about 30 minutes. Cook vegetables: Bring about 6 quarts unsalted water to a boil in an 8-quart pot. Have ready a large bowl of ice and cold water. Add cauliflower to pot and boil until crisp-tender, about 4 minutes, then transfer with a slotted spoon to ice bath to stop cooking. Cook remaining vegetables separately in same manner, allowing 4 minutes each for bell peppers and carrots and 2 minutes for celery. Drain vegetables in a colander and spread out on 2 large kitchen towels to dry. Add cooked vegetables, peperoncini, and olives to pickling liquid. Weight vegetables with a plate to keep them submerged, then chill, covered, at least 1 day. Cooks' notes:•Stainless steel, glass, and enameled cast iron are nonreactive; avoid pure aluminum and uncoated iron, which can impart an unpleasant taste to recipes with acidic ingredients. •Pickled vegetables keep, covered and chilled, 1 week.
PreparationMake pickling liquid: Bring pickling-liquid ingredients to a boil in a 3-quart nonreactive saucepan over moderate heat, stirring until sugar is dissolved. Transfer to a 4-quart nonreactive bowl and cool about 30 minutes. Cook vegetables: Bring about 6 quarts unsalted water to a boil in an 8-quart pot. Have ready a large bowl of ice and cold water. Add cauliflower to pot and boil until crisp-tender, about 4 minutes, then transfer with a slotted spoon to ice bath to stop cooking. Cook remaining vegetables separately in same manner, allowing 4 minutes each for bell peppers and carrots and 2 minutes for celery. Drain vegetables in a colander and spread out on 2 large kitchen towels to dry. Add cooked vegetables, peperoncini, and olives to pickling liquid. Weight vegetables with a plate to keep them submerged, then chill, covered, at least 1 day. Cooks' notes:•Stainless steel, glass, and enameled cast iron are nonreactive; avoid pure aluminum and uncoated iron, which can impart an unpleasant taste to recipes with acidic ingredients. •Pickled vegetables keep, covered and chilled, 1 week.