Mother of pearl, also called nacre, is an iridescent layer of material that forms the shell lining of many mollusks. Pearl oysters and abalone are both sources of this substance, which is widely used as an inlay in jewelry, furniture, and musical instruments.
Pork rind is the skin (rind) of a pig. Pork rind is a common ingredient of sausages, which helps to improve their consistency.Fried or roasted pork rind and fat is also a snack. The frying renders much of the fat that is attached to the uncooked rind, causing the cooked product to reduce considerably in size.The product may be known by alternative names, such as pork scratchings or pork crackling in the UK, although the term crackling may also refer to the rind atop a roasted pork joint.ork rinds, sometimes cracklings, is the American name for fried or roasted skins of pigs, geese or other animals, regardless of the status or amount of pork in the snack. Pieces of fried meat, skin, or membrane produced as a byproduct of rendering lard are also called cracklings.
While most pork rinds are fried and eaten in crispy way, not all the pork skin reaches the frier, as some of the skin free of fat is pickled in a pork feet recipe. A by-product in frying rinds is the decanted residues in fryer called asiento or boronas (grounds).