River Cottage site and the C4 site there are comments stating that there is too much liquid in the recipe as printed and that it should be 250mls of Guinness or buttermilk, not 250mls of each, and several bloggers who have also made it picked up on the published error.
Anyway - this idiot used both, and ended up with a sloppy batter which couldn't be shaped by hand. I scraped it into a large casserole dish lined with scrunched up baking parchment and got a decently shaped cob-like loaf out of it. However it didn't cook properly, even after more than an hour in a very hot oven, and the cut loaf showed both a dense, too moist texture and a line of under-baked dough at the bottom of the loaf.
The flavour combination of cheese and apple should have been great, but the loaf had a bitter after-taste which neither of us found pleasant to eat. Guinness is notorious for bitterness but I don't usually find it a problem, so I'm wondering if there was a weird interaction between the Guinness and the buttermilk.
There's a lot of potential in this soda bread so I really want to try it again, with just one of the suggested liquids, but can't really find an occasion to do so, as neither of us are eating bread at the moment, except for Saturday lunch, when I don't think Hubs would give up his crusty baguette.
I was going to enter this quick soda bread into this month's Tea Time Treats challenge, which is for breads, but as the recipe was a failure, and we didn't even like the flavour of the finished loaf, it hardly seems right to do so!