Old-Fashioned Marinated Pork Loin with Pepper-Onion Gravy

A simple, old-fashioned pork roast marinated for flavor and finished with a rich, savory sauce—straight from my mother’s kitchen. 

This recipe comes from my mother’s recipe file, where meals were built around what was on hand and what would feed the family well.

She had a way of taking a simple cut of meat and turning it into something flavorful and satisfying without much fuss. A marinade, a hot oven, and a good sauce at the end—that was often all it took.

This pork loin recipe is a perfect example. It’s straightforward, dependable, and finished with a savory sauce that brings everything together.

Ingredients: 

2 1/2 lb pork loin (shoulder end)
1/2 to 3/4 c. soy sauce (adjust to taste)
1 Tbsp. brown sugar
1/2 tsp. salt
1/4 tsp. pepper
1 c. beef stock
1 c. chicken stock
1/4 c. soy sauce
1 Tbs. granulated sugar
Pinch of cayenne pepper (to taste)
1/4 tsp. ginger
1 1/2 Tbsp cornstarch
1 1/2 Tbsp cold water
1 bell pepper, diced
1 onion, diced

Directions: 

In a large bowl or sealable bag, combine soy sauce, brown sugar, salt, and pepper.

Add pork and coat well. Cover or seal and refrigerate for 2–3 hours.

Preheat oven to 350°F.

Remove pork from marinade and place in a Dutch oven or roasting pan. Bake for 45–60 minutes, or until internal temperature reaches 145°F.

Remove from oven and let rest for 10 minutes before slicing. 

While the pork is resting, it is time to make the sauce.  

In a saucepan over medium-high heat, combine beef stock, chicken stock, soy sauce, sugar, cayenne, and ginger. Bring to a boil, then reduce to a simmer.

In a small cup or bowl, whisk the cornstarch and cold water until the mixture is smooth. Slowly pour the cornstarch mixture into the sauce, whisking constantly. Cook until the sauce is a medium thick consistency.

Stir in the peppers and onions. Turn the heat to medium low and cook for about 5 minutes or until the vegetables are tender.

Slice pork into 1/4-inch slices. Arrange on a platter and pour sauce over the top. Serve and enjoy.

Tips for Best Success:

• Don’t skip resting the pork—it keeps it juicy
• Use a meat thermometer for accuracy
• Slice against the grain for tenderness
• Taste sauce before thickening and adjust salt if needed

Variations & Substitutions:

• Use red or yellow bell peppers for a sweeter flavor
• Add garlic or fresh ginger for more depth
• Substitute low-sodium soy sauce to control salt
• Try pork tenderloin (reduce cooking time)

Serving Suggestions:

• Serve over white rice or egg noodles
• Pair with steamed vegetables or stir-fried greens
• Add a side of simple cucumber salad for balance

How to Store:

• Refrigerator: Up to 4 days
• Freezer: Up to 2 months
• Reheat gently with extra sauce or broth to keep moist

Frequently Asked Questions:

Can I marinate the pork overnight?
Yes, but reduce soy sauce slightly to avoid overly salty flavor.

Can I make the sauce ahead of time?
Yes, reheat and stir before serving.

Why is my pork dry?
It may be overcooked—remove at 145°F and let it rest.

Can I skip the vegetables?
Yes, the sauce works well on its own.