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Pork loin steaks with mustard leeks and potatoes

Golden pork loin steaks on soft leeks in a mustard and yoghurt sauce, with new potatoes and green beans. A plain, comforting plate that is ready in 35 minutes.

By The foodose editorial team. Nutrition calculated from USDA FoodData Central. Checked on paper on 16 October 2026; not yet cooked in a test kitchen or photographed, so the times and yield are estimates. How we develop our recipes
What still needs a real kitchen
  • Confirm the steaks reach 63°C in 4 to 5 minutes a side
  • Confirm the yoghurt stays smooth stirred in off the heat
  • Photograph the finished plate
Time
About 35 min
estimated
Serves
2
see below
Energy
475 kcal
per serving
Protein
46 g
per serving
Jump to recipe
Not yet photographed. The panel names the dish’s main ingredients rather than showing a picture we have not taken.

Ingredients for 2 servings

2 servings

Check off ingredients as you go.

Contains milk, mustard. Check the labels on packaged ingredients:

  • vegetable stock. Vegetable stock often contains celery, and some contain milk or gluten; check the label, especially if you need it vegan.
  • Dijon mustard. Many Dijon mustards also declare sulphites; check the label.

Cooking steps

  1. Boil the potatoes in salted water for 15 to 18 minutes, adding the green beans for the last 4 minutes, until the potatoes are tender to a knife. Drain.

  2. Meanwhile, pat the pork dry and season it. Warm half the oil in a large frying pan over medium-high heat and cook the pork for 4 to 5 minutes a side, until golden. Move them to a plate, cover loosely and rest for at least 3 minutes.

    Cooked when: 63°C / 145°F, then left to rest for 3 minutes before slicing. A food thermometer is the reliable way to tell.

  3. Lower the heat to medium, add the rest of the oil, the leeks and the thyme, and cook for 6 to 8 minutes, stirring, until the leeks are soft and silky. Pour in the stock and let it bubble for 1 minute.

  4. Take the pan off the heat and stir in the Dijon mustard, then the Greek yoghurt and any juices from the resting pork.

  5. Serve the pork on the mustard leeks with the potatoes and beans, scattered with the parsley.

The useful detail

Add the yoghurt off the heat. Strained yoghurt has too little fat to survive a boil and curdles into grains; stirred into a pan that has stopped bubbling, it turns the leeks into a smooth sauce.

Make it work for you

One serving is One pork steak with half the leeks, potatoes and beans. You can switch to a smaller portion in the ingredients above; it is three quarters of this, and it contains correspondingly less energy and protein. It is an option, not a goal.

  • Pork tenderloin instead of loin steaks

    Leaner and more tender. Brown it whole for 12 to 15 minutes, turning, and rest it before slicing.

    Per serving: about 20 kcal less, about 4 g less protein, about 1 g less fat.

  • Chicken stock instead of vegetable

    A little more savoury in the sauce.

    Per serving: about the same energy, about the same protein, about the same fat.

  • Wholegrain mustard instead of Dijon

    Milder, with more texture. Nutrition is not recalculated.

    Allergens: Still contains mustard.

Estimated nutrition

Per standard serving, calculated from the ingredients above. Nutrition changes with substitutions, brands and how much oil stays in the pan.

Pork loin steaks trimmed of fat are nearly as lean as chicken breast, so the plate gets most of its protein from the pork and its fibre from the leeks, potatoes and beans.

Nutrition per serving
Energy475 kcal
Protein46 g
Fat11 g
of which saturates2 g
Carbohydrate52 g
of which sugars10 g
Fibre8 g
Sodium410 mg
Show calculation notes

Each ingredient’s weight is multiplied by its USDA FoodData Central values per 100 g. The whole recipe is added up and divided by 2. Raw weights are used for meat, fish and vegetables; beans and lentils are drained weights. All of the oil is counted as eaten. Added salt is not included; sodium from stock, bread, cheese and tinned food is.

Calculation, whole recipe
IngredientWeight usedSourceEnergyProtein
potatoes300 gFDC 170026Potatoes, flesh and skin, raw231 kcal6.1 g
green beans150 gFDC 169961Beans, snap, green, raw47 kcal2.7 g
pork loin steaks300 gFDC 168263Pork, fresh, loin, center loin (chops), boneless, separable lean only, raw369 kcal71.3 g
olive oil9 gFDC 171413Oil, olive, salad or cooking80 kcal0.0 g
leek250 gFDC 169246Leeks, (bulb and lower leaf-portion), raw153 kcal3.8 g
fresh thyme leaves1 gFDC 173470Thyme, freshA teaspoon of thyme leaves weighs 0.8 g, under 1 kcal on FoodData Central 173470. That record has no sugars value, so the leaves are listed here rather than counted, which keeps the recipe's sugars calculable.··
vegetable stock98 gFDC 171583Soup, vegetable broth, ready to serve5 kcal0.2 g
Dijon mustard15 gFDC 2710085Mustard10 kcal0.6 g
Greek yoghurt80 gFDC 170903Yogurt, Greek, plain, lowfat58 kcal8.0 g
parsley5 gFDC 170416Parsley, fresh2 kcal0.1 g
Whole recipeDivided by 2955 kcal92.9 g

Per serving the energy is rounded to the nearest 5 kcal, grams to the nearest whole gram and sodium to the nearest 10 mg. Ingredients marked “Not calculated” are excluded and could add at most 1 kcal to the whole recipe. Calculation method 1.0, September 2026. How the calculation works.

Storage and reheating

In the fridge
Cool and refrigerate within 2 hours of cooking. The FDA chart gives cooked meat 3 to 4 days.
Reheating
Reheat gently, covered, until it reaches 74°C / 165°F, steaming hot throughout. Do not let the sauce boil or the yoghurt will split.

Checked against US Food and Drug Administration, Refrigerator and Freezer Storage Chart, USDA Food Safety and Inspection Service, Leftovers and Food Safety, FoodSafety.gov, Safe Minimum Internal Temperatures and FoodSafety.gov, Cold Food Storage Chart. UK guidance from the Food Standards Agency is shorter, at two days for most leftovers.

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