a_cermak:
Cardinal George dispensed this requirement the last time it came up too. His reasoning is that the Irish families gather together at St. Pats, some traveling to be with family, so in light of the family nature of the corned beef and cabbage he dispensed it.
In the United States, the celebration of the Feast of St. Patrick is an optional Memorial.
As such, the local Ordinary has the option of raising the celebration of the Feast to that of a Solemnity. The raising of the feast to a Solemnity is de facto in any diocese that has St. Patrick as it’s patron.
A pastor of a parish named after St. Patrick may also raise it’s status for his parishioners.
Solemnity is higher on the liturgical calendar than a Lenten day, so, like Sundays, they remain in the calendar season of Lent, but are not actually part of Lent.
So if the Bishop chooses to celebrate this feast as a Solemnity, the Feast is no longer a Lenten Friday.
This is perfectly licit, and has been done throught the entire history of the Church.
St. Patrick’s Day in Ireland, for example, is always a Solemnity, as Patrick is the Patron of the country.
Even before Vatican II, it was alwas licit to eat meat on St. Patricks’s day, though it always falls in Lent.
In fact, that’s kind of where the ‘Corned Beef’ part comes it.
The more traditional Irish dish is “Boiling Bacon”, a section of ham\bacon. It was used for St. Patrick’s day because it kept well throughout the previous Lenten time, when all meat was otherwise forbidden.
The Irish in American could not find boiling bacon in the butcher shops, so they substituted Corned Beef, which does have a similar taste.
And one other historical Lenten tidbit, it is licit to eat muskrat and beaver on Fridays in Lent in the Archdiocese of Detroit.
That comes from the colonial period. The word for ‘fish’ the local Indian population used also encompassed all swimming creatures . So the Jesuits got an indult from the Bishop of Montreal, which Detroit was under at the time, to allow such water creatures to be eaten during Lent.
That indult was renewed when Detroit became it’s own diocese, as it had become a bit of a local tradition. I know a few meat shops that will special order it during Lent.