Yummy!
Corned Beef, boiled in salted water until tender with onions, potatoes, turnips ( cabbage added in the last fifteen minutes ir so).
Then a White sauce made from the juice & Cornstarch, maybe a hint of garlic. Or one can have hot Mustard - or both.
Hot Mustard is especially good on C.B. sandwiches -if one has left overs.
I had mine on the Transferred feast (Friday) as Holy Week supecedes ALL Saints feasts, in deference to Christ's Passion, Death & Resurrection, whiich Holy Week commemorates.

Thus I appeared at the Pub in all my "Patrician" splendour. being the only lone who knew the Feast had been transferred. So I was quite a Kilted hit.

Someone muttered 'The Church should stay out of it, changing holidays' . The crowd howled, reminding him it is SAINT Patrick, a Catholic Bishop & Patron Saint of Ireland that we are commemorating.

A fun evening all round.