cardamom & orange rhubarb cake

Every spring I get a sudden hankering for rhubarb, get excited when I spot some in a shop or market, buy one or two bunches of pretty pink stems, eagerly bring them home... and then proceed to wonder what exactly to do with them. The answer is often cake — and this year was no different. You don't have to be über-precise when it comes to home baking (the same cannot be easily said for...