I concur with Mouthy -- Dairy Queen - used to hit there every thurs nite after BS... they were good until it was a no no and later, one of the brothers worked for them and checked and it was not correct.. so back we went to eating them again.. Blood puddings in this part of the world - supposed to be famous - down the South Shore way... but just the word turned me off..
Mostly the Jewish brands were // are kosher, so they were//are eaten... the rabbi has to bless the operation and in so doing, no by products or blood is allowed... that is usually a safe bet and now their products are flagged by the word Kosher or OV, I think it is.. wonder what the society thinks of eating that food that is blessed by the rabbi? Well, we are not allowed to ask questions now, so I guess I will never know..
We have Bulk Barns here and you can see on the labels what items are kosher..
There was a local producer of meats, pepperoni, salami etc. and they used to put a ton of blood in their product. One of their wives was driving it to the plant and it spilled in her car, and was a terrible mess to clean up. Even if not a witness, I would not have eaten that stuff just because of the blood puddings..... I never was a lover of processed meats..