
While we have our fair share of cooler climate regions that mimic Europe’s most famous; for those regions that are classified as ‘hot’, the winemaker has to throw an array of tricks to make the resulting wine taste decent.
You see, without these tricks, hot climate/outback wines can be as subtle as a brick. Full flavoured, big, fruity, ripe, overblown and rich are all common descriptors. When the weather is hot, grapes grow fast, sugar levels are high and the natural acid levels are low. And while the flavours may be big, they can also fall short.
Obtaining the perfect balance of acids, sugars and tannins is the winemaker’s goal. When a wine comes from a hot climate – these elements can be out of whack, so careful intervention is needed. And this can be achieved in the vineyard through canopy management or in the winery.
This can be partially achieved in the vineyard by limiting the amount of sun exposure; through selective pruning to provide shade for the grapes or planting the vineyard on a hill away from the sun. The aim is to preserve the natural acids in the wine. It’s these acids that make the wine taste fresh, zippy and alive. You can usually taste this sensation on the sides of your tongue.
Vineyard intervention is usually not enough, so the winemaker now steps in. Did you know the winemaker is legally allowed to add acid to wine! But don't worry, this acid wont make you think the walls are melting around you. No, this acid is the spritzy tasting additive called tartaric acid. This levels out the fruity flavours in the wine to bring about a harmonious balance between sugar and acid. Without this process hotter climate wines will taste dull and lifeless in the mouth.
While acidification is common practice in Australian wineries, in Europe the opposite problem exists. The regions are cooler and sometimes the grapes have trouble ripening to full maturity. Failing to reach full maturity results in grapes with low sugar levels and this in turn results in a wine with low alcohol levels. To combat this some European winemakers physically add sugar (in the form of grape extract) to the grape juice. This additional sugar boosts the alcohol level and also gives the wine more ‘weight’ (ie. so it doesn’t taste thin in the mouth).





















