Cocktails are usually mixed drinks based on rum, gin, tequila, vodka, whisky, brandy and other spirits or wines, with fruit juice, egg white, bitter essence, milk, coffee, sugar and other accessories, which are stirred or shaken evenly. Finally, lemon slices, fruits or mint leaves can be used as decoration.

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Beer is the oldest alcoholic beverage of mankind and the third largest beverage in the world after water and tea. Beer was introduced to China in the early 20th century, and it is an imported wine. Beer is translated into Chinese "beer" according to English beer, which is called "beer" and is still in use today. Beer is a low-alcohol wine rich in carbon dioxide, which is made of barley malt, hops and water by yeast fermentation.

At present, most beers in the world have added auxiliary materials. Some countries stipulate that the total amount of auxiliary raw materials should not exceed 50% of malt consumption.

It has low alcohol content, carbon dioxide and rich nutrition. It contains a variety of amino acids, vitamins, low molecular weight sugars, inorganic salts and various enzymes. These nutrients are easily absorbed and utilized by the human body. Low-molecular-weight sugars and amino acids in beer are easily digested and absorbed, which produces a lot of heat energy in the body, so beer is often called "liquid bread".

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