How to Cook a 1.5 kg Pork Roast: Time and Temp

Mastering the Perfect 1.5 kg Pork Roast: Cooking Time, Temp, and Tips

A succulent, tender pork roast with a golden, crackling crust is the ultimate comfort food. Whether you are planning a cozy Sunday family dinner or meal-prepping for the week, a 1.5 kg pork roast is an ideal cut—large enough to feed a crowd or yield fantastic leftovers, yet manageable enough to cook to perfection without spending all day in the kitchen.

Here is everything you need to know about cooking times, internal temperatures, and the secrets to achieving restaurant-quality results at home.

The Golden Rule: Cooking Time at a Glance

For a standard boneless pork loin or shoulder roast cooked at an oven temperature of 190°C (375°F), the general rule of thumb is:

Roughly 40 to 50 minutes per kilogram.

For a 1.5 kg pork roast, you can expect a total cooking time of 60 to 75 minutes (1 hour to 1 hour and 15 minutes).

Note: Cooking times can vary slightly depending on the shape of your roast, whether it is bone-in, and your oven’s accuracy. The absolute best way to check doneness is with a digital meat thermometer.

Step-by-Step Guide to a Succulent Roast

1. Prep and Temper (The Secret to Even Cooking)

• Bring to room temp: Take your pork roast out of the refrigerator 30 minutes before cooking. Putting a freezing-cold roast straight into a hot oven causes the outside to overcook before the center reaches the right temperature.
• Pat dry: Use paper towels to pat the skin or surface completely dry. Moisture is the enemy of a good, crispy crust.
• Season generously: Rub the roast with olive oil, sea salt, freshly cracked black pepper, and your favorite herbs (rosemary, thyme, and garlic powder work wonders with pork).

2. The Roast

• Preheat your oven to 190°C (375°F).
• Place the roast on a rack inside a roasting pan so the heat circulates evenly underneath.
• Roast for approximately 60 to 75 minutes.

3. Temperature Check

Forget guessing games—insert a digital meat thermometer into the thickest part of the meat.

• For a juicy, slightly pink center (Recommended for pork loin): Pull it out when it hits 63°C (145°F).
• For well-done (Better for shoulder/butt cuts): Aim for 70°C to 75°C (158°F to 165°F) so the connective tissue breaks down and melts in your mouth.

4. The Crucial Rest

Do not slice the roast immediately! Transfer the pork to a warm cutting board or platter and tent it loosely with aluminum foil. Let it rest for 10 to 15 minutes.