In a large bowl, combine the first seven ingredients; stir until the sugar is dissolved. Fill cylinder of ice cream freezer two-thirds full; freeze according to manufacturer's directions. Stir in chocolate chips.
Refrigerate remaining mixture until ready to freeze. Allow to ripen in ice cream freezer of firm up in your refrigerator freezer 2-4 hours before serving. Sprinkle with additional chips. Yield: about 2 quarts.