Icelandic Cream-Skyr No rBST* *No significant difference has been shown between milk derived from rBST treated and non-rBST treated cows. Live Active Cultures: S. thermophilus, L. delbrueckii subsp. bulgaricus, B. lactis, L. acidophilus, L. delbrueckii subsp. lactis Skyr, that's Icelandic for thick yogurt!