How to Thaw a Prime Rib Roast?

Roasted prime rib, often known as standing rib, is a wonderful, delicate, and juicy cut of beef. With this high-quality protein, you may wow your family and friends while they’re hungry for more meat.

The most expensive roast is the rib roast, as it has less connective tissues and is far more delicate than other roasts.

Keep the leftovers of prime rib in the refrigerator for days or freeze them to eat later. This will help to keep your steak fresh and free from spoiling.

How to Thaw a Prime Rib Roast?

There are a few methods to thaw your prime rib roast. You might use the microwave, put it in cold water, leave it in the fridge, or defrost it while frozen, all of which will take longer.

Angus Prime Rib Roast - 8 Pounds - Bone In- Chefs Choice

Thawing in the Refrigerator

Thawing a prime rib roast in the fridge takes 2-3 days, depending on thickness. It’s also the most hygienic approach to thaw your prime rib because germs are less likely to develop in cold temperatures.

You remove your prime rib roast from the packaging, place it on a plate, and then store it in the back of the refrigerator. This will prevent dripping on other items in the fridge and result in cross-contamination.

Cold Water

This is a typical situation, and you’ve most likely tried it before. You put plastic bags in water like a cooler or sink to seal them. Make sure the plastic bag isn’t leaking by checking for holes before submerging it in water. After 30 minutes, you may also drain out any excess water to maintain the temperature.

It’s essential to completely defrost the entire prime rib. Furthermore, to prevent food poisoning, do not defrost your prime rib roast in warm or hot water.


Most microwaves now feature improved settings that let you set the defrosting time and alarms to notify you when it’s time to turn your meat.

Because microwaves are different, you may need to check on timing and flip after 5-7 minutes in case your microwave does not alert you. It’s a fast solution that can help you prepare supper as soon as you get home feeling hungry.

Straight to Cooking

This skips the thawing process and directs frozen prime rib straight into your sous vide machine. The technique increases the cooking time by 50%. It may also put your prime rib in the danger zone, putting you at risk of foodborne illnesses.

Is it Safe to Eat Thawed Prime Rib Roast?

Yes. You can safely cook your prime rib roast after thawing it. All you need to worry about is that the defrosted prime rib does not remain at room temperature for more than two hours, since bacteria will gather and cause food poisoning.

Meat that has been defrosted takes less time to cook than frozen meat. If you store your food properly, there will be no difference in the texture or quality of the meat. As a result, you won’t lose anything in taste after cooking. Ensure that your meat is completely thawed and doesn’t contain any ice before cooking it.

How Long Can a Prime Rib Last in the Fridge?

Prime rib should be kept for three to five days before being cooked, whereas cooked prime rib should keep for up to four days. If vacuum-sealed, an uncooked prime rib roast may remain in the refrigerator for over a week.

To avoid bacterial growth, it’s critical to keep the uncooked prime rib roast cool throughout the cooking process.

How Many Pounds of Prime Rib Per Person?

The average amount of prime rib required per person is one pound. This will be somewhat affected by what else you’re eating.

If you have a lot of mashed potatoes, veggies, extra bread, and a starter and dessert to serve, you may cut portions without sacrificing taste. However, this is an excellent guideline to follow when purchasing.

How Long Does It Take To Thaw a 6 Pound Rib Roast?

Allow 12 to 24 hours for steaks, depending on thickness. Large roasts or thick compact pot roasts should defrost in 4 to 7 hours per pound. Smaller roasts and thin pot roasts defrost in 3 to 5 hours per pound.

What Is the Fastest Way to Thaw a Prime Rib Roast?

Fill the sink with enough water to cover the sealed packages completely. Place the beef (still in its sealed plastic package) in the water, replacing it with fresh cold water every 30 minutes. It will take approximately 30 minutes per pound to thaw the beef using this approach.

Can You Thaw Prime Rib at Room Temperature?

If you wish to defrost prime rib at room temperature, keep it in an airtight container. If you do so, be sure to immerse it in cold water to speed up the process and avoid bacterial development.

Melissa is a food enthusiast and one of the founders of Kitchen Study - a food blog about the vegan lifestyle, meal delivery services and cooking guides. She writes about delicious vegan dishes from all over the world. From quick and easy weekday lunches to perfect Sunday dinner recipes, we have it all covered!