It is hardened/thick bile. This is good flush.. keep flushing..

Chaff in small pieces of congealed bile that that look a little like lentils. Too small to be called stones.

What you saw in my opinion is bile. When the contents of the stomach enter the intestines it starts out green. It turns bright yellow as it goes through the digestive tract. In your case the yellow indicates that the bile hasn't been re-absorbed. The foamy mucus may be the waste product from a bacterial infection (similar to snot from a nose cold) in the biliary system or maybe just the bi-products of the flush ingredients.

You have successfully flushed the old bile and possibly an infection from your biliary system. Congratulations!

Contrary to other opinions all oils are digested. The reason being that oils are not soluble in water and need bile to emulsify the oil so that it can be absorbed through the intestinal wall where it passes to the liver.

Fat digestion and absorption requires that the complex fat molecules be broken down into smaller more manageable molecules. This is done by mixing the fat with the digestive enzyme lipase, which enters the duodenum from the pancreas - the main source of enzymes for digesting fats and proteins. Lipase chops up lipid molecules into fatty acid molecules and glycerol molecules. However, because fat does not dissolve in water, the fat molecules enter the duodenum in a congealed mass, which makes it impossible for the pancreatic lipase enzymes to attack them, since lipase is a water soluble enzyme and can only attack the surface of the fat molecules. To overcome this problem the digestive system uses a substance called bile, produced in the liver but stored in the gallbladder, which enters the duodenum via the bile duct. Bile emulsifies fats - meaning, it disperses them into small droplets which then become suspended in the watery contents of the digestive tract. Emulsification allows lipase to gain easier access to the fat molecules and thus accelerates their breakdown and digestion.