So I just stumbled upon this thread and the eating blood discussion. I eat black pudding all the time as it's one of my favourite foods, and have never been under the impression that it's disallowed. Here is the verse from Bereshis as translated by Jewish folks:
But, flesh with its soul, its blood, you shall not eat. (B. 9:4)
This sounds to me pretty much how the Law is generally enumerated, i.e., don't eat the flesh of a living animal, 'with its soul'. What I understand from this is not to eat any part of a still-living animal, whether flesh or blood, eye or tongue, it's not to be eaten.
Here is the whole passage from Vayikra,
Therefore, I said to the children of Israel: None of you shall eat blood, and the stranger who sojourns among you shall not eat blood. And any man of the children of Israel or of the strangers who sojourn among them, who traps a quarry of a wild animal or bird that may be eaten, and sheds its blood, he shall cover it with dust. For the soul of all flesh its blood is in its soul, and I said to the children of Israel: You shall not eat the blood of any flesh, for the soul of any flesh is its blood all who eat it shall be cut off. (V. 17:12-14)
This sounds to me as though it is saying that Jewish folks cannot eat blood at any time, and the non-Jew who lives among them cannot, but doesn't seem to say anything about anyone non-Jewish in general regarding this prohibition.
I hope I'm not misunderstanding this because that's going to lead to transgression since, as I said, black pudding is a favourite of mine.