Discard any already moldy or mushy berries.

The container you have the solution in should be wide enough such that the berries won’t be stacked on top of each other. The vinegar will not get rid of mold that is already on any berries so discard berries that are already moldy. This not only washes the berries thoroughly, but it also extends their shelf life. [8] X Expert Source Ollie George CiglianoPrivate Chef & Food Educator Expert Interview. 31 January 2022.

If you are concerned about vinegar remaining on the berries then you do have the option of very gently rinsing the berries in water while in the salad spinner.