The sand leek (Allium scorodoprasum), also known as rocambole and Korean pickled-peel garlic,<ref>Template:Cite book</ref> is a Eurasian species of wild onion with a native range extending across much of Europe, Middle East, and Korea.<ref name=sasha>Kew World Checklist of Selected Plant Families</ref><ref>Altervista Flora Italiana, Aglio romano, sand leek, Allium scorodoprasum L. includes photos, drawings, European distribution map</ref><ref>Komarov, V.L. (ed.) (1935). Flora SSSR 4: 1-586. Izdatel'stov Akademii Nauk SSSR, Leningrad.</ref><ref>Davis, P.H. (ed.) (1984). Flora of Turkey and the East Aegean Islands 8: 1-632. Edinburgh University Press, Edinburgh.</ref><ref>Danin, A. (2004). Distribution Atlas of Plants in the Flora Palaestina area: 1-517. The Israel Academy of Sciences and Humanities, Jerusalem.</ref><ref>Dimpoulos, P., Raus, T., Bergmeier, E., Constantinidis, T., Iatrou, G., Kokkini, S., Strid, A., & Tzanoudakis, D. (2013). Vascular plants of Greece. An annotated checklist: 1-372. Botanic gardens and botanical museum Berlin-Dahlem, Berlin and Hellenic botanical society, Athens.</ref> The species should not be confused with rocambole garlic, which is A. sativum var. ophioscorodon.
The sand leek is a perennial plant with an egg-shaped bulb. The plant produces two to five unstalked leaves, the bases of which are sheath-like. Each leaf blade is linear, 7–20 mm wide,<ref name=Stace>Template:Cite book</ref> flat with a slight keel, an entire margin and parallel veins. The edges of the leaf and the central vein are rough to the touch. The flowering stem is cylindrical, growing to a height of Template:Convert and the upper half is leafless. The whole plant has an onion-like aroma. The inflorescence is a globular cluster surrounded by membranous bracts in bud which wither when the flowers open. Each individual flower is stalked and has a purple perianth Template:Convert long. There are six tepals, six stamens and a pistil formed from three fused carpels. Mixed with the flowers are a number of purple bulbils. The fruit is a capsule, but the seeds seldom set, and propagation usually takes place when the bulbils are knocked off and grow into new plants.<ref name=NatureGate>Template:Cite web</ref>
The natural habitat of A. scorodoprasum is damp broad-leaved woodland, forest margins, shores, hillside meadows and hedgerows. It was at one time used as a kitchen herb and can sometimes be found near old habitations.<ref name=NatureGate/><ref name=PFAF>Template:Cite web</ref>
A. scorodoprasum is edible but seldom cultivated, and has a shorter flower stalk and fewer and more inconsistently shaped cloves than Rocambole garlic. Sand leek also has a dark violet bulb wrapper.<ref>Growing Great Garlic, 2nd Edition, Filaree Productions, 1992, p. 7.</ref>