Whatever you want it to be. You select the meat and veg you want to cook and the sauces and spices along with stock. Put it all in your bowl and they cook it on a BBQ for you. So you could have minted lamb with peas or curried beef or something veggie - the combinations are endless and they give...
You could try the Chinese in Portslade just down from the station - Oriental Village (?). Eat as much as you like for a set price ( around £12 if memory serves me right ).
Or Sushi Garden in Preston Street is pretty good for groups - you sit around the chef as he cooks - avoid too much Saki...