What is the fine-grained topic of the following text: Fermentation on the skins, with a submerged cap and daily pumping over of the must; drawing off after 5 days, and completion of the fermentation off the skins to enhance the wine’s softness; after the malolactic fermentation the wine stays in stainless steel until the following spring, when it is bottled for release in June. Only return the topic.
Wine Production Process