Defrost in the refrigerator for 7 hours per pound.
It is not advisable to cook pork joints from frozen, unless it is a commercial, small joint prepared to size and with specific instructions. Thaw yours thoroughly and then cook as fresh meat.
From personal experience, the best way to bake a frozen pork roast is to seal it well in tin foil with a bit of added water and bake at 200 to 250 degrees F for up to 4 hours or more. Just wrap it, put in the oven and leave it for 4 hours. After 4 hours, check it for doneness. You are looking for juiciness and tenderness. The meat cooks slowly in its own juices and becomes fall-apart tender. If it isn't as tender as you'd like, as the defrosting will require a while, re-wrap and bake it longer.
Thawing an 8 lb pork shoulder roast in the refrigerator typically takes about 24 to 36 hours. If you need to thaw it more quickly, you can use the cold water method, which usually takes around 2 to 3 hours, but be sure to change the water every 30 minutes to keep it cold. Avoid thawing at room temperature, as this can promote bacterial growth. Always cook the roast immediately after thawing it using the cold water method.
How long it takes to thaw a Boston butt roast depends entirely on how big the roast is.
you can't!
It is not safe, because you don't know what type of bacteria is living in your sink. It is best to thaw meat in the refrigerator.
The best and safest way to thaw a frozen turkey roll roast is to move it from the freezer into the refrigerator to allow it to thaw. In a time crunch, you can remove it from the box and soak in cold water to thaw. You should change the water every 30 minutes or so until it is completely thawed.
Thawing a pork shoulder typically takes around 24-48 hours in the refrigerator.
about 2 - 3 hours per pound, typically.It mostly depends on your method of thawing the roast, and the size of the roast.The roast if it is about 5 pounds will need to absorb about 720 btus of heat to fully thaw. Let's assume the surface area of the roast is roughly 1 square foot.Thawing it in the refrigerator at 45 degrees F the air will transfer to the roast ~14.4 btu/hr per degree F/sq. foot. Assuming there is no insulation value (u factor) in the meat itself. 45 -32 (temperature of ice) = 13 x 14.4 = ~187 btu/hr720/187 =~4 hours, HOWEVER, meat does have an insulating value, unlike a melting block of ice, which would thaw similar to this. This insulating value of the meat slows the thawing of the meat in a steadily increasing rate such that it takes longer to thaw the center than the outer edges. This changing rate of thaw for solid masses other than ice blocks means it takes as much as four times longer to thaw a large piece of meat than smaller pieces. Taking the above assumption then a five pound roast will actually, because of this changing rate of heat absorption (why the outer edge of meat can be fully cooked and the center frozen), take about 8 to 12 hours to thaw in a refrigerator.Thawing it in a basin submerged in water, because the rate of heat exchange is 4 times faster than the rate of exchange with air, will be 4 times faster. Roughly 2 to 3 hours for a five lb. roast.Thus when thawing a 20 lb. turkey for Thanksgiving, it takes about 2-3 days in the refrigerator but only overnight (12-15 hours) when thawed in a water filled tub.Attempting to thaw a roast while cooking it is not really recommended. It might reduce the thawing time but the outer shell of the roast will overcook, dryout or burn. If doing this cook the roast an extra 10-15 minutes per pound and reduce the cooking temperature by 100 degrees F for the first third of the cooking time.Braising, [cooking in a covered roasting pan on a rack with a braising liquid in the roasting pan], is often a good method to use here to avoid drying out the roast.
The right way to thaw potentially hazardous foods such as beef or pork is to place it in the refrigerator. This allows the food to slowly thaw without it having to be exposed to warm temperatures and bacteria. If you are in a hurry and want to cook the food, you can also thaw it in a bowl of cold water. Change the water frequently.
For optimal results, you should thaw a 16-pound turkey in the refrigerator for approximately 3-4 days.