Easy and non-scientific – I made rough / hard apple cider from UK tescos store bought apple juice concentrate (aldi or lidl would work too and maybe cheaper). I added 250grams of sugar and 4 teaspoons of Turbo Yeast – This is ROCKET FUEL – Two pints and I’m a happy drunk! I do the breathalyser test and hit way above the limits! Want a quick cider, but don’t want to pulp, press and juice some apples? This is a fantastic method! Dubious Brewing 😀