It is recommended not to use stainless steel cups, which is related to the specific heat capacity of the problem, stainless steel products hot fast, cool fast, will seriously affect the temperature and taste of coffee.
Everyone in the coffee business knows that all the utensils used in making coffee need to be warm or preheated, and kept at a proper temperature.
Therefore, ceramic cups are most suitable for holding coffee drinks (except for ice drinks), and glass utensils are suitable for making coffee.
Pure hand play answer, I hope to help you!
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Yes, as long as the cup can hold 100 degrees of hot water