Orange Upside-Down Cake **

Candied orange slices (make 1 day ahead)

• 4 oranges, preferably organic
• 1½ cups (10½ oz./300

1. Wash the oranges under cold water and scrub them with a small brush. Using a mandoline or sharp knife, slice the unpeeled oranges into very thin rounds, removing any seeds and discarding the ends.
2. Combine the sugar and water in a large saucepan over low heat and stir until the sugar dissolves. Increase the heat, bring to a boil, then lower the heat again. Add t