Ebstein Anomaly Ebstein anomaly is a rare defect in which the tricuspid valve, which prevents backflow of blood from the right ventricle into the right atrium, is deformed. The right side of the heart is where deoxygenated blood from the body is pumped into the lungs for oxygenation.
Buttermilk never expires. Ten days after the expiration date, just boil it for a few minutes and let it settle for a while. It makes a great dry yogurt in the form of cookies. They last for years.
Butter does not have an infinite shelf life and does expire. If unopened butter is refrigerated at temperatures below 40 degrees Fahrenheit it can last up to two months. Butter that does not contain oil only stays good in the refrigerator for one month.