• Wash and dry produce. • Dice potatoes into 1/2-inch pieces. • Place potatoes in a medium pot with enough salted water to cover by 2 inches. Bring to a boil and cook until tender, 15-20 minutes. Reserve 1/2 cup potato cooking liquid, then drain. Return potatoes to pot; cover to keep warm.

• While potatoes cook, trim and thinly slice mushrooms (skip if your mushrooms are pre-sliced!). Trim and thinly slice scallions, separating whites from greens.

• Pat pork* dry with paper towels and season all over with salt and pepper. • Heat a drizzle of oil in a large pan over medium-high heat. Add pork and cook until browned and cooked through, 4-6 minutes per side. • Turn off heat; transfer to a cutting board and tent with foil to keep warm. Wipe out pan.

• To pot with potatoes, add sour cream and 1/2 TBSP butter (1 TBSP for 4 servings); mash until smooth, adding splashes of reserved potato cooking liquid as needed.

• Heat a drizzle of oil in pan used for pork over medium heat. Add mushrooms and scallion whites; cook, stirring occasionally, until browned and slightly crispy, 5-7 minutes. Season with salt and pepper. • Add vinegar, stock concentrate, 1/4 cup water, 1 TBSP butter, and 1/2 tsp sugar (1/2 cup water, 2 TBSP butter, and 1 tsp sugar for 4 servings); cook, stirring, until mushrooms are coated and sauce has thickened slightly, 1-2 minutes. TIP: If sauce seems too thick, stir in more water 1 TBSP at a time.

• Slice pork crosswise. • Divide pork and mashed potatoes between plates. Spoon mushroom sauce over pork and garnish with scallion greens. Serve. Pork is fully cooked when internal temperature reaches 145°.