Bring 3/4 cup prepared cherries, 1/2 cup amaretto, 1/4 cup sugar, and 1/8 tsp salt to boil in a small saucepan over high heat. Reduce heat to medium and simmer until thick and syrupy, 8 to 10 minutes. Remove from heat.
Transfer to large bowl and cool slightly, about 5 minutes.
Add remaining fresh cherries to the cooked cherries and toss to coat.
Puree half of the cherry mixture in a blender or food processor, and set aside both the cherry puree and halved cherries (in separate bowls).
In a large bowl, whip the whipping cream with the sugar just until stiff peaks form. (Do not over-mix or it will turn into sweetened butter)
Fold the cherry puree into half of the whipped cream.