Kitchen gadgets review: the self-heating butter knife – what a time to be alive!

Declaring this 'the most advanced butter knife in the world' is pretty much winning a race no one else was running

SpreadTHAT's self-heating butter knife, Selfridges, RRP 19.99, a titanium-alloyed bronze wand, with its upper edge dully serrated. Used for paring chilled butter in thin, readily smear-able strips.