I have heard of it, awbrig. I just didn't know what you meant by the term. If anything Irish-ish goes, I suggest chunks of lamb shoulder, seared, remove, lift fond with Irish whisky. Add to fine mire poix once it sweats, braise for four hours. Remove meat, strain (this means many many times until clear for those playing at home) the stock. Regrigerate until next day. Skim any fat left. Heat stock, add pints o' Guiness, add meat. Add brunoise of tatties 'n' neeps. Simmer forty minutes. Mount with butter. Serve with soda bread and a dash of cream, roasted carrots with chervil.