Teff or taf (Eragrostis tef, Amharic ጤፍ ṭēff, Tigrinya ጣፍ ṭaff) is an annual grass, a species of lovegrass native to the northern Ethiopian Highlans of northeastern Africa. It has an attractive nutrition profile, being high in dietary fiber and iron and providing some protein and calcium. It has a sour taste. It is similar to millet and quinoa in cooking, but the seed is much smaller.