BLT = bacon letuce & tomato sandwich
surf = seafood
turf = grass eatin beef
Surf and Turf is common in Oz too. It's usually a piece of steak with a variety of fish pieces, prawns, calamari, oysters and scallops (not all of them at once though). And it's usually the most expensive thing on the menu!
BLT here stands for beetroot, lettuce and tomato.