1 lg. pkg. Jello (any flavor)
1 (15 1/2 oz.) crushed pineapple

Make Jello according to package, using part of pineapple juice for liquid. Add pineapple and let harden.

DRESSING:

1/2 pt. sour cream
2 tbsp. vinegar
2 tbsp. sugar
1 sm. pkg. cream cheese
Pinch of salt
Miniature marshmallows
2 tbsp. mustard

Fold in marshmallows, spread on Jello.