Wash the grapes and squeeze out the juice with your hands. (This is the Cajun way of making wine, Bernard, who lives in New Iberia, says.)
Fill the bottle the rest of the way up and stir. Drill a hole through a cork, and through the hole put a length of transparent tubing. Cork one end of the tubing in the bottle of wine and put the other into a container of water. Be sure the tubing stays in the water, this way carbon dioxide can escape without air getting into the bottle and spoiling the wine. Let sit someplace cool for 14 days. That's all it takes, according to Bernard, to make wine.