Liquor Quik SuperYeast X-Press is by far our highest alcohol producing turbo yeast. It is capable of producing 25 litres of 20% alcohol in as little as 5 days. You can ferment multiple packs at a time, as long as the sugar, water, and temperature is kept constant. It works by fermentation of a special distiller’s yeast and complex blend of nutrients and vitamins. View the instructions, including ways to further increase your alcohol.