We stumbled across a British foods section, at least that's what I think it is, today at our City Market. A lot of it was recognizable, but this stuff wasn't. We had to investigate it. WTH is it anyway? A website I found describes it as boiled suet pudding.

How do you eat it? 56g of carbs per 100g seems hefty.
The stuff that you can't quite make out in pic#2 is called "Mushy." Is it edible?