There are worse examples of that in real life, at least yukkuris makes sense since they are basically magical premade food, a dumpling/manjuu, but in real life there are cases of small squids and other stuff being eaten alive as part of a culinary delicacy.
I still think it would be better to prepare and cook whatever you eat, yukkuris included, but eating yukkuris alive mirrors a bit some real life recipes.
Kiri? .... kiri has returned? This is good. To most who find that consuming a living being too be rather, uncivilized, have this http://www.youtube.com/watch?v=LzJEGqek3TQ