Tartar is a yellowish – brown calcified material formed on the surface of teeth. The accumulation of tartar determines the inflammation of the gum tissue. The medical term for this condition is gingivitis and.
Before century, all leavened bread was sourdoughbread, since they thought it was the yeast giving the bread the sour taste. Today we are able to produce yeast without lactobacillus which actually gives the sour taste.