Big wine holders are large containers used to store and age wine. The most common type of big wine holder is a cask, which is a large barrel-like vessel made of wood or metal. CASKS are often used to store and age red wines, as they allow for a slow and steady oxidation process that helps to develop the flavor and complexity of the wine. CASKS also help to protect the wine from spoilage and oxidation, as they are airtight and can be sealed with a bung.