Question: how many oz is 1 square of unsweetened chocolate?
Answer: 'Chocolate Brownie Pie' recipe from Half a Can of Tomato Paste and Other Culinary Dilemmas by Jean Anderson & Ruth Buchan calls for: 2 squares (1 ounce each) unsweetened chocolate. 'Pear and Chocolate Tart' recipe in The New James Beard cookbook calls for: 6 squares (6 ounces) semisweet chocolate.