Skyr est caseus recens secundum traditionem Islandicam confectus. Lac, cramo sublevato, subbullire et refrigescere sinitur: sub temperatura 37° culturas Streptococci thermophili et Lactobacilli delbrueckii subsp. bulgarici et coagula inoculantur. Skyr sicut iogurtum ad ientaculum sumi solet.
Fontes antiquiores
saec. XIII ineunte: Egils saga Skalla-Grímssonar cap. 71
saec. XIV exeunte: Grettis saga Ásmundarsonar cap. 28
Hallgerður Gísladóttir, Íslensk matarhefð (Reykiavici: Mál og menning, 1999. ISBN 978-9979-3-1846-0) pp. 67-73
Hallgerður Gísladóttir, "The Use of Whey in Icelandic Houscholds" in Patricia Lysaght, ed., Milk and Milk Products from Medieval to Modern Times: Proceedings of the Ninth International Conference on Ethnological Food Research, Ireland, 1992 (Edinburgi: Canongate Academic, 1994) pp. 123-29
Sigriður Thorlacius, "Do you know skyr?" in Petits propos culinaires no. 4; reimpressum in Alan Davidson, Helen Saberi, edd., The Wilder Shores of Gastronomy (Berkeleiae: Ten Speed Press, 2002) pp. 172-176