With no oranges available during the war, British kids were given blackcurrants for their vitamin C. These tart little berries have been a favourite ever since. But as Peyton & Byrne prove with this intensely fruity jam, it's not just kids who love their jams.

Mary Queen of Scots was so smitten with marmalade's sweet tang, she even believed it could help her get pregnant. Much as Peyton & Byrne welcome the unbridled enjoyment of its marmalade, we do urge you not to lose your head.

God bless the Victorians. Without the pioneering spirit of people like nurseryman Michael Keens, strawberries wouldn't be what they are today. And Peyton and Byrne wouldn't be able to bring you jam quite as gorgeous as this.

Raspberries are ridiculously good for you and have been used for centuries to fight illnesses from flu to neurosis. Peyton & Byrne also believe they taste like heaven and make the best jam ever. What's not to love?