Abstinence from meat (beast or fowl) is to be observed by all Catholics fourteen years old and older on Ash Wednesday and on all the Fridays of Lent. This obligation prohibits the eating of meat, but not eggs, milk products, or condiments of any kind, even though it’s made from animal fat.
Fasting means limiting oneself to one full meal on a given fast day. Catholics who are eighteen years of age but not yet fifty-nine are obliged to fast on Ash Wednesday and Good Friday. On fast days, two additional smaller meals are permitted if necessary to maintain strength. However, the two smaller meals together may not equal one full meal. Moreover, eating solid foods between meals on fast days is not permitted.