Koseret leaves

What koseret is

Koseret is an aromatic leaf used as a seasoning in Ethiopia. Kew accepts it as Lippia abyssinica (Otto & A.Dietr.) Cufod., a subshrub or shrub of seasonally dry tropical regions, and treats Lippia adoensis, including the named variety L. adoensis var. koseret, as synonyms. Older Ethiopian papers use those other names.

Kew lists Lippia multiflora as a separate accepted species. A shared local name or an older scientific name cannot identify a specimen, cultivar or market lot, so the studies cited here keep the names and vouchers they reported. Koseret is also spelled kosert, kusaye and kusaaye.

Spice blends, butter and dairy

A 2025 review in the Journal of Ethnic Foods lists koseret among the indigenous and naturalized species used in Ethiopian spice blends, alongside korarima, tosign and ginger. Its supplementary table records the leaves flavouring cheese, seasoning butter and meat, and cleaning milk pots.

A survey of culinary plants around Fiche records koseret among the plants used to make niter kibbeh, the spiced clarified butter. The record names the use and gives no quantities or sequence. In Midakegn, a 2023 survey of wild edible plants records leaves and stems used for spicing in pepper powder and butter, and leaves used to scent or clean milk pots and kitchen tools.

Chemo, a coffee-leaf drink

A 2026 study of chemo, a coffee-leaf beverage, covers eight sites in the Tepi area of southwestern Ethiopia, with fieldwork from August to October 2025. Its ingredient table lists Lippia abyssinica under the name kosert among the plant additions that vary from household to household. The study shows variation. It does not establish one recipe or a validated beverage process.

Growing context

Kew places the plant in seasonally dry tropical biomes. A leaflet from the Ethiopian Biodiversity Institute reports L. adoensis in home gardens at 1,600 to 2,200 metres, but it also conflates that species with the separate L. multiflora, so the altitude is not a verified growing threshold for koseret. A homegarden inventory in Sebeta-Awas records a voucher-linked L. abyssinica shrub kept as a spice and fragrant plant, without a growing protocol.

The sources give no cultivar-specific frost or heat limits, light, soil, irrigation, propagation, harvest, pest or container guidance. Biome, wild-range and homegarden observations are not production instructions.

What the records leave open

The accounts describe place-specific use. They give no household recipe with quantities, steps, yield and storage, and no validated preservation effect, medical benefit or safety endpoint. The chemo paper spells the plant L. abyssinica in its ingredient table and L. adoensis elsewhere, and pairs no voucher with that row. No local collection-permission or conservation assessment was found.