I made this the other night to take and share with another Aussie Recipezaar member. It was really enjoyed by everyone at dinner. I based it on the artichoke dip I love, but it's different enough to post as a new recipe. We catch our own crabs and bag the meat up in 1 or 1 1/2 cup lots. I used a big one, so think two 180g or 6oz cans would be about right if you don't have the fresh stuff. A cobb loaf is a round crusty bread that weighs obout 600g or 1 1/2 lbs. I like to leave the artichoke and crab a bit chunky as I like the texture, but chop it all finer if you wish.