Types of beer is no truly satisfactory classification of beers.‘Clear, European-style beers’ may be distinguished by the raw materials used in their preparation, the ways in which the brewing operations are carried out, whether top, bottom or ‘bulk’ fermentation is used, how the product is conditioned, whether it is chilled and filtered and carbonated or is conditioned in bottle or cask and how it is packaged. Stouts, porters and wheat beers，which are produced in conventional ways, are often not […]