Cocktail is a kind of mixed drink, which is made of two or more kinds of wine or drinks, juice and soda. It has certain nutritional value and appreciation value. It is a kind of mixed drink which is usually based on rum, gin, tequila, vodka, whisky, brandy and other spirits or wines, and is mixed or shaken with juice, egg white, bitter essence, milk, coffee, sugar and other auxiliary materials. Finally, it can be decorated with lemon slices, fruit or mint leaves.