How long to roast a 13 lb pork loin?

It's impossible to give you an exact roasting time without knowing the thickness of your 13 lb pork loin. Here's why and how to figure it out:

Roasting Time Depends on Thickness:

* Thicker loins take longer: Heat needs to penetrate the entire cut of meat.

* Thin loins cook faster: They reach the safe internal temperature quicker.

Here's how to calculate roasting time:

1. Measure thickness: Find the thickest part of the loin and measure it.

2. Use a guideline: A good rule of thumb is to allow about 20-30 minutes per pound of pork loin at 325°F (160°C).

* For a thicker loin (over 3 inches): Use the higher end of the range (30 minutes per pound).

* For a thinner loin (under 3 inches): Use the lower end of the range (20 minutes per pound).

3. Adjust for bone-in or boneless: Add 30 minutes for a bone-in loin.

4. Use a meat thermometer: The most accurate way to know when your pork loin is done is to use a meat thermometer. Insert it into the thickest part of the loin, making sure it's not touching bone. Pork is safe to eat when it reaches an internal temperature of 145°F (63°C).

Example:

* 13 lb bone-in loin, 4 inches thick:

* 13 lbs x 30 minutes/lb = 390 minutes

* Add 30 minutes for bone-in = 420 minutes (7 hours)

Important Notes:

* Resting time: After roasting, let the loin rest for 15-20 minutes before carving. This allows the juices to redistribute, resulting in a more tender and flavorful roast.

* Oven variations: Different ovens can have slight temperature variations. Use a thermometer to ensure your oven is at the correct temperature.

* Doneness preference: Some people prefer their pork loin cooked to a higher internal temperature. If you want a more well-done roast, you can cook it to 150°F (66°C).

Let me know the thickness of your pork loin, and I can help you calculate the roasting time more accurately!