Sparkling Punch

2 cups orange juice
6 oz unsweetened pineapple juice
1 cup unsweetened apple juice
3 T lemon juice (optional)
12 oz soda water

Combine the fruit juices in a large pitcher.  Make 12 oz soda water with your soda siphon.  Add soda to juice mixture.  Pour over ice.  Makes about 4
(10 oz) servings.