Americano shot is an Americano made from espresso and water.

Shot means espresso, and Americano is made with espresso and a certain proportion of water.

Most fancy coffees (such as latte, cappuccino, macchiato, mocha) are made with espresso and milk foam, etc. ONE SHOT refers to It means one shot of espresso, DOUBLE SHOT (double shot of espresso), or TRIPLE SHOT (three shots of espresso shot). The more, the higher the concentration of the coffee.

Extended information:

"American coffee" (English: Americano, Italian: Caffè Americano) is a type of coffee and is the most common coffee. It is black coffee made using a drip coffee pot, or espresso made by adding a large amount of water.

American coffee has a lighter taste. Because the general extraction time is relatively long (about four or five minutes), the caffeine content is higher.

Reference materials:

Xinhuanet - Guide to coffee shop pretense

Xinhuanet - A U.S. court ruled that Starbucks coffee must carry a cancer warning label