If it was frozen, then thaw it out, then heat it up (making sure it is cooked through. If it was not frozen, then I'm not sure so be careful.
no
not long at all. like with any meat, if it's out of refrigeration for long periods of time it will spoil. the climate where you are can also affect how long it can go without refrigeration. If you made roast beef for sandwiches down at the beach, it should be fine for the drive down (though I'd put it in a cooler to be on the safe side). If you live in a really warm, humid area, the roast beef'll probably go bad in a matter of hours if not refrigerated.
Bacteria can form on food left out after an hour. It is best to refrigerate cooked food as soon as possible to prevent this.
TYPE OF BEEF REFRIGERATOR(35°F to 40°F) FREEZER(0°F or colder) FRESH BEEF Steaks, Roasts 3-4 days 6 - 12 months Beef for Stew 2-3 days 6 - 12 months Ground Beef 1-2 days 3-4 months LEFTOVER COOKED BEEF All types 3-4 days 2-3 months NEVER DEFROST MEATS AT ROOM TEMPERATURE!
7 days in the refrigerator. If it was canned, put it in a glass or plastic container before you refrigerate it.
Cooked chili with beef should be good 3 - 5 days stored in the refrigerator.
You can safely store cooked beef in the refrigerator for 3 to 4 days.
Three days for cooked roast potatoes or cooked chips.
3 to 4 days is a good time frame. Try using it within the shortest time possible. If you have a super-chill drawer, it should keep better for a little longer. If you can't use it within a few days, freezing it will make it last longer. Slice it into smaller pieces and wrap tightly with impermeable wrap or vacuum package to prevent freezer burn. Use it within a few months.
Meats do not last long in the refrigerator. Only about 3 to 4 days if it is raw. Then 1 to 2 days longer if cooked and placed in an airtight container. You should always cover meats when stored in the fridge.
Plan on holding raw beef in the fridge for only 3-5 days for steaks and roasts, but only 1 or 2 days for ground beef. If you are not going to use it in that time frame, you should probably freeze it.
Cooked buffalo meat should be good for 3 to 4 days refrigerated.
Cooked fish should be good for 3 to 4 days refrigerated.