ragi

[Hindi rāgī, from Sanskrit, perhaps of Dravidian origin.]

Dried balls of starter containing moulds, yeast and bacteria on cereal or starch, used as a starter inoculation for production of lao-chao, saké, tape, and other fermented foods.

The noun has one meaning:

Meaning #1: East Indian cereal grass whose seed yield a somewhat bitter flour, a staple in the Orient
  Synonyms: finger millet, ragee, African millet, coracan, corakan, kurakkan, Eleusine coracana