You can but they get grainy when you thaw them. It works better to only cook them partially and then freeze them. When you thaw them you can finish the cooking and they aren't so grainy. A potato dish like scalloped potatoes or mashed potatoes have the same problem. The freezing process separates the water from the potatoes and makes the texture grainy when they are thawed. But it's not as noticable in a prepared dish as in just plain potatoes.
Yes, you can freeze a cooked beef joint.
You can freeze cooked chicken for up to 3 months for best quality.
You can freeze cooked turkey for up to 3 months for best quality.
You can safely freeze sausage before or after it is cooked.
Yes you can, but it will take longer to cook as the meat is frozen.
You can safely freeze dressing before or after it is cooked.
Yes, you can safely freeze cooked kebab meat one time. Once thawed, it is unsafe to refreeze any cooked meat.
Yes, you can safely freeze stuffing, before or after it is cooked.
Check this article out abouting freezing potatos. http://www.thriftyfun.com/tf000995.tip.html
Yes.
yes
You can pretty much freeze any cooked food. That is the advantage of freezing. It is the best way to store foods.