His ancestor invented Guinness almost 300 years ago by roasting the barley; now Kim Kindersley has turned to the cultivation of the cannabis plant, hemp.
From his smallholding in Co Cavan, he's helping to revive an industry that disappeared from the Irish countryside a century-and-a-half ago.
Kindersley and Michael Ó Lionsaigh, a Cavan farmer, are harvesting their hemp crop to produce CBD oil, which is undergoing a worldwide boom because of its perceived medicinal qualities.
"Hemp is believed to be the oldest cultivated crop in the world; it could bring life back to rural Ireland," says O' Lionsaigh - who, like Kindersley, is passionate about a plant that can be used to produce thousands of products and is leading the boom in hemp oil production.
"Growing it here with family and friends gives us all a connection to the land," says Ó Lionsaigh. Because of its close association with cannabis, it is highly regulated.
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