I know someone who is a barista. He really do like to ask one question in different time.sometime 8 am ,sometime at noon. That question would be Have you taste coffee today ?
If the answer is no ,that he will realize his preemption. More important is he can know what the customer need in short time.
If the answer is yes that would be a useful information .It’s mean they drink coffee not for relieve their fatigue . Maybe more for a good coffee .
When they have different experience with different moon today ,the barista will suggest try different drink ,coffee or beverage.
As a barista ,he feel like have more time and space to talk with his customer .
The good thing is when the customers willing to tell him what happen today ,he can collect more information to mixing drinks for pleased them.
coffee valve thinks whatever today you have taste coffee or not ,did the coffee tasty good or worse.
We both should try to choose the coffee made of the fresh coffee bean. Not the instant coffee with many chemical composition.
Whatever the package form that the business choose, the one-way valve is a necessary component to add on, some information on coffee variety is provided.
One way valve believes that drinking coffee should be like tasting wine, first smell the aroma, and then try a small bite, that you can taste the essence of it.