Everything You Need to Know About Choosing a Barrel – Wood Type, Size, Burn Level and Preparation. Get a Drink with Perfect Taste Choosing a cask is one of the most important steps on the road to making quality homemade wine or spirits. It is where the drink breathes, matures and acquires its unique character. It is not just a container, but a full-fledged instrument that directly influences the resulting taste, aroma and colour. It should be chosen carefully, because the right barrel can serve you for decades. In this guide from BONPOS, we look at the key parameters to consider to ensure you choose exactly what you need. Material first: Why is oak the best choice? Oak is the most commonly used wood for barrel making - and for good reasons. Its structure allows the drink to breathe - a so-called micro-oxidation takes place, which softens the tannins and harmonises the taste. At the same time, oak wood imparts tannins and other substances to the drink, which enrich its structure and aroma. The species of oak and its influence on taste Oak has different species. Most often you will find three basic types, each of which imparts different characteristics to the drink: French oak: It has a fine grain and gives the drink elegant, spicy notes with hints of vanilla and nuts. It ages more slowly and harmoniously. American oak: has coarser fibres and is more aromatic. It adds strong notes of vanilla, coconut, caramel and sweet spices. It is particularly popular for aging bourbon and some red wines. European (Slavic) oak: more neutral in flavour than its French and American 'cousins'. It is high in tannins but low in aromatics, allowing the original character of the drink to fully emerge. It is well suited for long ageing. Barrel size: How does it affect maturation? Keg size is a key factor in determining how quickly your beverage will age. A simple rule of thumb applies: the smaller the barrel, the greater the ratio of wood surface area to liquid volume. This means that small casks (1-10 litres) age much faster because the drink has more contact with the wood. They are ideal for experiments, for maturing spirits or for those who want to achieve a result within a few months. Larger casks (20 litres and up) allow for slower and more gradual maturation, resulting in a more complex and balanced flavour - ideal for fine wines. Degree of firing: the key to unique aromas The inner surface of the barrel is scorched by fire before use - a process called firing. This caramelizes the sugars in the wood and produces a wide range of aromatic substances. Light Burn (LT): Preserves the natural flavour of the wood and fruit, adding light spicy notes. Medium burn (MT): The most versatile choice. Adds notes of vanilla, caramel, coffee and honey to the drink. Strong burn (HT): Creates a strong aroma with notes of smoke, dark chocolate and roasted almonds. Ideal for strong spirits and full-bodied red wines. Preparation of the keg before first use A new keg cannot be filled with alcohol immediately. It must be properly prepared so that the wood swells and the drink does not leak. The procedure is simple: First, rinse the cask with cold water. Then fill it with cold water and let it stand for 2-3 weeks, changing the water regularly. This will expand the wood and seal all the joints. It's better to use potable water than technical water. After use, rinse the barrel, fill with water and store in this state until the next season, changing the water regularly. Choosing the right barrel is an art, but one that relies on solid knowledge. Consider the beverage you want to produce, the flavour profile you want to achieve and how much time you are willing to devote to it. Whether you are an experienced winemaker or a beginner, the right BONPOS barrel will become your reliable partner on the road to your ideal drink.
