I bought a container of price reduced strawberries when we were grocery shopping for bbq food. I gave them an eight min bath in 1/4 C white vinegar and enough water to just top the berries. After draining, I placed them on a clean tea towel to dry.
The former customer of ours that gave us blackberries from his backyard as I was making dinner to let me know he pick another huge yield that day. I dispatched the husband to grab another pint from the nice customer. When he got back, i set up the same vinegar and water bath for the blackberries. I rested them eight mins, drained them, and laid them out to air dry.
From there, I lined each plastic container with a bit of paper towel, and placed the berries back inside them before I found some room in the fridge to eat them this week.