Ah! Inspiring! I intend to make a special trip to the beer shop, so shall go for a dark ale or Guiness as a first stab. If it works, no doubt I'll be cooking with lager, port and tequila in no time at all...
It's Guinness all the way! Here's a Beef Stew recipe from my blog, it is one of my favourite comfort foods, especially in this cold weather. Brrrrr! feelingfood.co.uk/2012/12/04/guiness-stew-and-elvis/ Lulabellarama sweet vegetables balancing out the bitterness is so true!
dreaming - now you're asking. They are a late addition to my culinary experience. According to this useful guide to turnip terminology, we call them "swedes". I don't really call them swedes, I'd be incline to call them white turnips.
So, in that picture there, what you've got is what I personally would call a white turnip. To distinguish it from this, which is a turnip: turnip.
I am more familiar with turnips that white turnips, because (1) we eat neeps and tatties with haggis; and (2) I am old enough that my Daddy made me a turnip lantern rather than a pumpkin one at Hallowe'en
I rarely cook with either. In fact, I may never have cooked with white turnip. Following Jux's comment, I'm not that inclined to try.