On those good productive days at the office you'll often find your morning coffee last until lunch. But that gross room temperature taste can be avoided over the course of your prolonged sipping exercise with the help of the Burning Cup.
Ryan Jongwoo Choi's invention is a sort of thermos with the dimensions and shape of a conventional mug and a clever chemical ingredient that allows it to work its magic. Between the inner graphene vessel and the outer plastic shell is a cavity that contains sodium acetate. When disturbed with the depression of two buttons on the Burning Cup's sides, the liquid hardens to a solid, generating heat and sharing it with the drink. This activity can be carried out periodically after the fluid has softened again. A thermochromic pigment in the base of the coffee cup keeps you visually informed of the temperature of your java.
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