The invention belongs to the technical field of beer
brewing, and relates to a preparation method of a
lotus root beer. The preparation method comprises three processes of
lotus root juice preparation, wort preparation and mixed
fermentation, and specifically comprises the following steps: washing away external
silt and sundry fungi with a
citric acid water solution, then feeding the clean
lotus root into a steam furnace,
steaming, cooling, saccharifying according to a conventional process method, performing
enzyme deactivation on the saccharified
lotus root sauce, and finally pressing and filtering through a conventional
extrusion apparatus to prepare a
lotus root raw juice; pulverizing malt, adding water, performing mash gelatinization, saccharifying, raking, standing, refluxing, washing, adding
humulus lupulus into a mash kettle, clarifying, and cooling to obtain wort; and adding the
lotus root juice in the post-
fermentation process of wort-based beer making, fermenting, cooling, filtering, and clarifying to obtain the lotus root health care beer. The preparation method has the advantages of mature process
route, simple
processing and preparation and low production cost; and the prepared lotus root beer has rich nutrients and a pure bouquet, is refreshing and tasty, has the function and
mouthfeel of a beer, and can achieve a health care effect.