Coke (English: Cola) refers to a carbonated drink that is sweet, contains caffeine but does not contain ethanol .   Flavors include vanilla, cinnamon, lemon, etc. The name comes from one of Coke’s early ingredients: kola nut extract. The most well-known cola brands are Coca-Cola and Pepsi-Cola .   Drinking Coke is originally a consumption behavior no different from drinking other drinks. However, the rich connotation of Coke culture goes far beyond the scope of “drinking”.   origin   invention   Coke was invented by an American pharmacist named John Pemberton. He hoped to create a medicinal mixed drink that would refresh the mind, relieve fatigue, and cure headaches . The “Coca Cola” prepared by Pemberton was originally gas-free and was mixed with cold water when drinking. It was only due to an accident that it became a carbonated drink . On the afternoon of May 8, 1886, a drunkard stumbled into Pemberton’s drug store. He said to the salesperson: ” Here is a cup of coca-cola, a medicine for treating headaches and brain fever.” The salesman was supposed to go to the faucet to mix water, but the faucet was more than two meters away from him. He was too lazy to move around, so he picked up soda water nearby . Coca-Cola mixed. It turned out that the drunkard actually liked drinking. He drank one glass after another, and kept saying: “It tastes good. It tastes good.” The drunkard also publicized the miraculous effects of this non-alcoholic drink everywhere. Before John Pemberton’s death, they sold the patent rights . Forty years later, no one in the world knows Coca-Cola . A carbonated soft drink containing cola nut extract and other flavorings , it originally originated in the United States. However, cola contains caffeine , which is a harmful substance to the human body, but it also has benefits. Everyone knows that cola contains carbon dioxide . When carbon dioxide enters the human body and comes out, it will take away the body’s heat. heat dissipation.   cola tree   The cola tree is an evergreen tree native to South Africa . It is cultivated in South America , Central America , the East and West Indies , Indonesia , Sri Lanka , and Malaysia . The kola nut fruit is about the same size as a walnut and contains several seeds. When immature, it is soft and fleshy, with a beautiful white or dark red color, and gradually turns to reddish brown during the ripening process. The fruits are collected when ripe but not split, peeled to remove the seeds, and dried to become cola beans. Cola nuts contain 1.5% to 2.5% caffeine that excites nerves . In addition, they also contain cholic acid , theobromine , cola alcohol, cola enzyme, cola tannins, glucose , gums , cola red, etc. Liquor is the flavoring agent for cola-type drinks .   formula   The main recipe for Coke is public. To commemorate Coca-Cola’s 100th birthday in 1986, Gustein named the new formula “7×100.” The ingredients are sugar, carbonated water ( carbon dioxide and water), caramel , phosphoric acid , caffeine , etc. It is this mixture of spices that gives Coke its unique taste. After long-term research, European food experts believe that the composition of “7X” includes: extracts or filters of vetch , ginger, mimosa , orange leaves , coca leaves, cinnamon and vanilla bark . The formula of Coca-Cola will not be exactly the same in different countries and regions , and the inclusion of local ingredients helps to adapt to the tastes of customers everywhere.   Drinking Benefits   1. Coke can relieve fatigue.   Coke contains caffeine. Caffeine can temporarily drive away drowsiness and restore energy. It is clinically used to treat neurasthenia and coma. Caffeine can improve the body’s sensitivity and concentration, accelerate the body’s metabolism, improve the body’s mental state and physical fitness, thereby eliminating fatigue.   2. Appetizer and food aid   Coke contains caffeine. Caffeine stimulates sympathetic nerves , stimulates the gastrointestinal tract to secrete gastric acid , promotes digestion, prevents bloating and gastroptosis , and promotes gastrointestinal hormones and peristaltic hormones to facilitate rapid defecation. Mix cola and tomato sauce half and half and smear it on the outside of the barbecue , so that the roasted meat will be very delicious. Use cola to mix noodles, and the steamed buns , steamed buns or fried twists and dumplings are very soft, crispy, and have a fruity aroma. The caffeine in cola can also stimulate the gastric mucosa and promote gastric acid secretion.