We test flasks and in­su­lated mugs for the best cof­fee on-the-go.

go! - - Regulars -

We filled each flask with 95° C water and laid it on its side. Ev­ery four hours we de­canted 300 ml into a tin cup, re­sealed the flask and mea­sured the tem­per­a­ture of the water in the cup. All the flasks had an equal 1 ℓ vol­ume and none of them, or the cups, were pre­heated. The test was con­ducted at room tem­per­a­ture.

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