a few of my irish friends that i'd asked about it are now curious as to what it could've been. thanks for keeping us up on this.
they suggested that a mayo based dip, as they'd suspected, is more of a dutch thing, but irish chefs are being trained all over the world now (thanks to the celtic tiger), then returning home with great cuisine.
irish restaurants and pub grub aren't the same ol' "overcooked meat and boiled everything else" as they once were.
hmmm, or it could be that some guy in arizona decided to come up with a cool name for sweet pepper mayo dip...