To make wine, you crush grapes to extract the juice which is then fermented to yield wine. The leftover stuff (skins, seeds, etc.) is known as pomace. Pomace is usually sent to the compost pile and eventually back to the plants as fertilizer.
Now, instead of sending pomace to the compost heap, why not send it though the wine making process again? And then add a small amount of sugar or honey to start a second fermentation resulting in a light, fizzy, refreshing drink known as Piquette.
Piquettes are low alcohol, fizzy, refreshing and perfect for the hot days of Summer. Serve chilled and if you want, serve it over ice.