Which drinks should not have Americano shots used in them?

The answer identifies that Americano shots should not be used in plain lattes. This is primarily because a classic latte is made with espresso and steamed milk, creating a creamy texture and rich flavor that balances the espresso's intensity. An Americano, which consists of espresso diluted with hot water, serves a different purpose and provides a distinct taste profile.

Using Americano shots in a plain latte would alter the intended characteristics of the drink. The creamy mouthfeel and the rich flavor from the steamed milk would clash with the diluted nature of the Americano, resulting in a beverage that lacks the classic latte experience.

In contrast, flavored lattes, iced coffees, and breves have components that can accommodate the different flavor profile and texture created by using Americano shots more than a plain latte can. Flavored lattes often integrate syrups that can blend with various espresso preparations, while iced coffees generally allow for more flexibility in how espresso is incorporated. Breves, which include steamed half-and-half, also have a creamy base that can complement the diluted flavor of Americano shots well.