1 1/2 teaspoons unflavored gelatin
2 tablespoons cold water
3 cups heavy whipping cream
1/2 cup sugar, or more to taste
Pinch of salt
1 1/2 teaspoons vanilla extract
1 cup (8-ounce container) sour cream
2 cups pitted fresh cherries, strawberries, or sliced peaches or pears
Or, 1 1/2 to 2 tablespoons artisan-made balsamic vinegar
Or, 2 to 3 tablespoons saba syrup or Vin Cotto