A passing thought, instead of freezing the sausages in bundles of four to make a casserole with, why not cook them all up in a casserole at once and freeze one and eat the other? That's what I often do. About once a month we have a "cook in Sunday" and prepare lots of meals for the freezer, and more or less eat what we've already prepared! It's also ecomonical to buy a larger piece of meat for roasting than a small piece - there's less shrinkage in the cooking and you can freeze the leftovers for another day, depending on the size of the piece of meat I can stretch a roast beef dinner over 3 meals a decent size chicken can provide 2 good dinners and still some leftovers you can also boil up the carcase for stock for soup or a casserole.