chocolate teapot

Melts when needed

A chocolate teapot is something utterly useless—an object that fails at its basic purpose, since a teapot made of chocolate would melt when filled with hot water.

The phrase appears in comparisons: about as useful as a chocolate teapot.

British in origin, with similar expressions like "chocolate fireguard."

Related

fifth wheel · bitter · dead weight · sweet · white · confectionery · dark · melting point · ganache · heat resistance · structural integrity · moulding · truffle · square peg in a round hole · hot potato · tensile strength · bar · brittleness

Opposites
usefulness/functionality

chocolate teapotgodsend

Unexpected welcome help

lifesaver · must-have · workhorse · Swiss Army knife · fit for purpose

design logic

chocolate teapotfit for purpose

Suitable for intended use

well-designed · purpose-built · form follows function · practical · built to last

Family

chocolate, chocolatey, chocolaty, teapot, teapots

Familiarity
Top 500,000
Profile
Timeless · Concrete · Everyday, not technical · Rated G