Iced coffee is a refreshing drink for summer. Mix very strong coffee with ice cubes, add cardamom, serve with cream and sugar and it's ready. A cup of iced coffee is delicious and refreshing on a sweltering summer day.

Iced coffee needs to be brewed at a low temperature. This method produces a sweet and delicious iced coffee with 67% less acid than hot brewed coffee. Brewing at low temperatures also removes the unpleasant bitterness of hot brewed coffee.

First, mix water and coffee. Add a certain amount of coarse ground coffee to the pitcher according to your taste. The darker the roasted mellow coffee beans, the more intense the coffee aroma will be. Second, add water. Add 9 cups of cold or room temperature water to the pitcher. Third, soak. Put a lid on the jug. Soak in a cool place for at least 12 hours. After steeping, the water needs to be separated from the coffee grounds. Fourth, filter coffee. Pour the coffee gently, pass it through a small hole sieve, and pour into another container. Fifth, put a filter on the sieve and gently pour the mixture of ground coffee and water over it to completely separate the water and ground coffee. The sweet and rich coffee concentrate is ready. Finally, add a certain amount of ice cubes to a glass, pour one part coffee concentrate, and add 3 parts cold water or milk and you're done.

In addition to boosting antioxidants, coffee is also surprisingly high in antioxidants, helping to improve overall skin health. Antioxidants can delay premature skin aging caused by sunlight and pollution, and can also scavenge free radicals that are harmful to the skin. The main antioxidants in coffee are flavonoids, which are released when brewed, so if your skin needs antioxidants, have a cup of coffee every day.

However, if you drink too much coffee, it can also be bad. Drinking coffee for a long time may cause symptoms such as headache, muscle pain, fatigue, inability to concentrate, and nausea; if drinking too much coffee can also lead to paralysis, severe dizziness, tinnitus, blurred vision, Rapid heart rate arrhythmias, so be sure to control your intake.