@DrJLecter I think I've seen them in a grocery store a few times in the U.S. but they are generally quite rare here. Seems like they are popular in the U.K.
@kimlockhartga I checked some photos now and can say I've never seen them despite being in the UK a lot. But I've never been there for Easter and they seem to be a speciality for this time of the year. We have some special stuff that's only for Easter as well ๐