What is buttermilk?

• Buttermilk is a fermented dairy drink made from cow's milk. Originally, buttermilk referred to the liquid leftover from churning butter from cultured or fermented cream.
• Buttermilk contains 0.5 - 1% lactose. Buttermilk also contains Lactococcus lactis or Lactobacillus bulgaricus. 
• An intolerance to this item may indicate gut biome, yeast and fungi imbalance, or an inflamed digestive system.