The thorny blackthorn was a staple of the ancient diet and a tool for survival.

Food & Drink · Published 30 September 2026 Swipe more like this →

In short: Known for its sharp, defensive thorns and astringent fruit, the blackthorn has shaped European landscapes and traditions for millennia. From the last meal of a 5,300-year-old mummy to the creation of traditional liqueurs and sturdy walking sticks, this resilient shrub remains a quiet, enduring presence in the wild.

Prunus spinosa, commonly known as the blackthorn, is a hardy, deciduous shrub native to Europe and West Asia. Reaching up to 6 metres in height, it is easily identified by its dark, spiny branches and creamy-white flowers that bloom in early spring. Its resilience allows it to thrive in diverse conditions, making it a common choice for cattle-proof hedges across northern Europe. Beyond its ecological role, the plant has long been integrated into human life; its wood is dense and durable, traditionally crafted into walking sticks, tool handles, and the iconic Irish shillelagh.

The fruit of the blackthorn, the sloe, is a small, dark drupe that ripens in late autumn. Fresh sloes are notoriously astringent, a quality that softens only after the first frosts—a process known as bletting, which can be replicated by freezing. This tartness has made them a versatile ingredient in European culinary history. Beyond their use in preserves and chutneys, sloes are the foundation for various regional liqueurs, including British sloe gin, Spanish pacharán, and Italian bargnolino. Historically, the plant’s utility extended further: its sap was used in manuscript inks, its juice as a dye, and its leaves as a tea adulterant.

Evidence of human interaction with the blackthorn stretches back to antiquity. Archaeologists have discovered sloe stones in Swiss lake dwellings, and perhaps most famously, a sloe was found near the remains of Ötzi, the 5,300-year-old mummy discovered in the Alps in 1991. This suggests the fruit was a deliberate part of his diet. Today, the plant remains a subject of cultural fascination, from the term 'blackthorn winter' describing cold spring snaps to its appearance in literature, where the phrase 'sloe-black eyes' has been used to describe dark features since at least 1735.

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