@kamos-bakehouse-ltd, excellent answer! Any off flavors from oil, ‘fishy’ flavors, or even the flavor of the oil indicates rancidity in the baked good. Rancidity is caused by? Yes! Oxidation! Oxidation is caused by? (In this situation) Yea, water activity. I’ll let you guys come up with the answer to see if you can help @khaled by lowering the water activity.