3 cups granulated sugar
1/2 cup orange juice
1/2 cup water
12 ounces semisweet chocolate chips
1 tablespoon grated orange rind
4 cups coarsely chopped walnuts

Combine first 3 ingredients in a large saucepan. Cook over medium heat, stirring constantly, until sugar dissolves and mixture boils. Clip a candy thermometer to the side of the saucepan. Cook, stirring occasionally, until mixture reaches soft-ball stage or 234 degrees F.

Remove from heat. Add chocolate chips and orange rind; stir until chocolate melts. Stir in walnuts. Pour into a buttered 13 x 9-inch pan; cool. Cut into 1-inch squares. Store in an airtight container at room temperature.