Preheat the oven to 375 degrees and line a baking sheet with parchment paper.
While the biscuits are baking, prepare the berries. Whisk the sugar and vinegar together. Fold in the berries and let stand for at least 15 mins.
Whip the heavy cream with a whisk or with the whip attachment of an electric mixer.
Beat until you have soft peaks, then gradually add the sugar while whipping. Add the vanilla. Continue whipping until you have stiff peaks.
Halve each biscuit with a fork. Spoon some berries over the bottom half, then top with a scoop of whipped cream. Place the top half of the biscuit on the whipped cream and serve immediately.