Cocoa-Pop Fudge

2 cups granulated sugar
2 (1 ounce) squares unsweetened chocolate
1/4 cup sweetened condensed milk
3/4 cup water
1 1/2 cups popped corn, chopped
1 tablespoon butter
1 teaspoon vanilla extract
1/8 teaspoon salt

Melt chocolate in saucepan. Add sugar, milk, water, butter, and salt. Boil to soft ball stage (234 - 238 degrees F). Remove from heat. Add flavoring and popped corn. Cool to room temperature. Stir until creamy. Pour into well-buttered, shallow pan. Cut into squares.