Store peeled onions in the freezer. Chop your onions and place them in a flat layer on a cookie sheet and freeze. After they are frozen, remove the onions from the sheet and store them in Ziploc bags or storage containers in the freezer. One of the down sides of this option is limited storage space.hop your onions and place them in a flat layer on a cookie sheet and freeze. After they are frozen, remove the onions from the sheet and store them in Ziploc bags or storage containers in the freezer. One of the down sides of this option is limited storage space.
Newborns with phenylketonuria initially don't have any symptoms. Without treatment, babies usually develop signs of PKU within a few months. PKU symptoms can be mild or severe and may include: 1  Intellectual disability (formerly called mental retardation). 2  Delayed development. 3  Behavioral, emotional and social problems.
Phenylketonuria (PKU) is an inborn error of metabolism transmitted genetically. Both parents must be carriers of the gene to produce a child with this condition. When both parents are carriers of the gene, chances of an affected child occurring are one in four for each pregnancy. There is a 50% chance that a child born to these parents will be a carrier of the phenylketonuria gene. There are no known clinical signs of PKU present in a newborn.