1 (3 oz.) pkg. lime Jello
1 c. boiling water
2 tbsp. white vinegar
1 tbsp. grated onion
1 c. shredded cucumber, peeled
1 c. sour cream
1/4 tsp. salt

In medium mixing bowl; mix Jello with water and vinegar. Refrigerate until Jello starts to jell. Then add onion, cucumber, sour cream, and salt. Return to refrigerator and let mixture set until softly firm. Take bowl out of refrigerator and set into a larger container of ice water. Beat until mixture is light and fluffy. Pour into a flat 1 1/2 quart glass baking dish. Return to refrigerator until firmly set.

To serve: Cut into squares and serve on a bed of shredded lettuce and red cabbage with a dollup of mayonnaise or sour cream on top.