Cream on the top plain yogurt. Ronnybrook has been making yogurt for over 8 years. When developing our recipe we sourced out a culture manufacturer who could provide us with a mixture of starter cultures to provide body-building characteristics: L. Bulgaricus, L. Yogurtii, L. Acidophilus, S.Thermophilus. These muscle-bound cultures act as a natural stabilizer for producers like us who desire a clean label declaration. Made with whole milk and live cultures, period. No thickeners or additives.