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Is there a reason one would not consume beer from a stainless steel vacuum insulated tumbler?

With a well insulated container the shape could be selected to minimize tipping / sloshing / spilling.

The roughness of the surface ruins the foam of any beer I've tried to pour into a metal yeti- or stanley-style travel cup, which are otherwise excellent at keeping things hot or cold.

Yeah, I got myself Stanley beer mugs and "glasses" and they are a game changer for keeping your beverages cold. This is extremely useful on hot days but even on not so hot days it is outright amazing how cold the beer stays. If you like your beer very cold there is nothing better.

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