Pour all the fruit in a colander over the sink and allow the juices to drain for four hours to ensure that it is as dry as possible. If you are in a hurry, you can use a clean kitchen towel to dry the fruit manually.

In a large mixing bowl, combine the sour cream and orange jello powder.

Stir the sour cream and gelatin mixture until completely combined and the color is uniform.

Add the drained fruit and mini marshmallows to the bowl and stir gently to coat all pieces thoroughly.

Chill in the refrigerator for at least one hour; four hours is better, and overnight is ideal for the flavors to meld.

Stir the salad once more right before serving and serve chilled.