All Fridays during Lent are days of abstinence from all meat (beast or fowl). The law of abstinence requires a Catholic 14 years of age until death to abstain from eating meat on Fridays in honor of the Passion of Jesus on Good Friday. Meat is considered to be the flesh and organs of mammals and fowl. Also forbidden are soups or gravies made from them. Salt and freshwater species of fish, amphibians, reptiles, and shellfish are permitted, as are animal-derived products such as margarine and gelatin, which do not have any meat taste.