What can I substitute sherry vinegar? If you don’t have sherry vinegar on hand, the next best thing will be a rice wine vinegar then white wine vinegar. Do I need to peel and seed English Cucumbers? The long thin cucumbers referred to as English or seedless cucumbers have a thin mild flavored skin. They can be eaten with the skin on and are crunchy all the way to the center. No need to remove the centers.