Bistort

Overview

Bistort is an astringent, a wound herb, a spring green, and a component of a dish — Easter ledger pudding, or dock pudding — that has been made in the Lake District and parts of Yorkshire for long enough that no one can say when the practice began. The name means twice-twisted, from the Latin *bis* and *tortus*, referring to the contorted underground rhizome that looks like it has been wrung out. The plant grows in old meadows and along stream banks, producing dense spikes of small pale pink flowers in May and June, and has been so consistently present in its preferred habitats that old stands are counted as indicators of ancient grassland.

Botanical Notes

A rhizomatous perennial, 20–80cm, with broadly lanceolate basal leaves on long winged stalks and a single, dense, cylindrical spike of small, pale pink five-petalled flowers from May to July. Stem leaves smaller, clasping. The rhizome is thick, S-shaped or Z-shaped, dark brown externally, pink-red within. Found in damp, neutral to slightly acid meadows, stream sides, and roadside verges, particularly in upland areas of northern England, Wales, and Scotland; more scattered in lowland Britain. Strongly astringent throughout due to tannins; the leaves and young shoots are edible and have been eaten as a potherb and salad ingredient since at least the medieval period. Not to be confused with amphibious bistort (*P. amphibia*), which grows in and beside water.

Lore & History

The Easter ledger pudding tradition centres on the Langdale and Grasmere valleys in Cumbria, where it has been made annually — and in recent decades competitively, at the Dock Pudding World Championship — from a mixture of bistort leaves, nettles, oatmeal, barley, onion, and butter, boiled and then fried. The dish is specific enough to a place and a season that it functions less as a recipe than as a ritual: the gathering of the leaves in early spring, the particular combination of wild greens, the timing with Easter. Medicinally, bistort appears in English herbals from the fourteenth century onward as an astringent for diarrhoea, bleeding, and the resolution of inflammation. The rhizome was one of the stronger astringents available before the introduction of tannin-rich tropical imports.

Warnings