By Ben Spencer PUBLISHED: 01:05 EST, 14 February 2013 | UPDATED: 06:04 EST, 14 February 2013 An 800-year-old recipe for aphrodisiac marmalade is to be turned into a new breakfast spread by the Duchess of Northumberland. Jane Percy, 54, the chatelaine of Alnwick Castle, is to launch the new lovers' marmalade as part of a new range sold in major supermarkets. The Duchess, mother of Pippa Middleton's old flame George Percy, discovered the eight-century-old recipe in the dungeons of Alnwick Castle. The Duchess of Northumberland, pictured in Alnwick Castle gardens, is to turn an 800-year-old recipe for aphrodisiac marmalade into a new breakfast spread
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The Duchess, Jane Percy, 54, found instructions on in ancient scroll
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She is the mother of Pippa Middleton's old flame George Percy
@placeholder found the ancient scroll containing the recipe in a dungeon at Alnwick Castle, Northumberland