Lemon sour cream cake recipe

I would have missed this 8th Sugar High Friday event had I not been browsing The Delicious Life late on Thursday afternoon. What? An SHF event is due in 24hrs? *yelp* *panic*This month's host, Alice, chose citrus for this edition's theme... lemon, limes, oranges etc. Hmmm.. what to make, what to make. Until --inspiration! I'd only just been commenting on Niki's blog about her sour cream chocolate