Steinfeder, the lowest of three ripeness categories for dry white wines from the Wachau region of Austria, being below both the later picked Federspiel and the latest picked of all, Smaragd. The rules for Steinfeder stipulate grapes picked at a minimum must weight of 73 to 83 ºOechsle or 15 to 17 ºKMW, and which ferment unchaptalized to 11.0% alcohol by volume or lower, and to dryness. The name originates from a wispy, featherweight grass species (Stipa pennata) indigenous to the Wachau’s steep vineyard terraces.