Ripping Knappstein Reserve Lager Clone. This recipe contains a low-temperature lager yeast for a very clean crisp lager finish. Definitely no heating required. Some say it is a brilliant cross between an easy drinking summer sessional lager and a bigger beer full of complexity and character. When you pour it into the glass you are immediately struck by the creamy richness of the head and the deep golden caramel colour. It also contains hints of passionfruit and green apple.