Equipment
Ingredients
Beef and Sear
- 500 g beef sirloin steak, sliced into 1 cm thick strips
- 15 ml vegetable oil
Vegetables and Aromatics
- 250 g cremini mushrooms, cleaned and sliced 0.5 cm thick
- 1 yellow onion, thinly sliced
- 3 garlic, minced
- 30 g unsalted butter, divided into two 15g portions
Sauce and Seasoning
- 15 g all-purpose flour
- 240 ml beef stock
- 120 g sour cream, room temperature
- 15 g dijon mustard
- 10 ml worcestershire sauce
- 4 g fine sea salt
- 2 g black pepper, freshly ground
- 10 g fresh flat-leaf parsley, finely chopped
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 439 kcal
- Protein
- 29 g
- Carbohydrates
- 12 g
- Fat
- 31 g
- Zinc
- 9.8 mg
- Water
- 260 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Pat dry 500 g of beef sirloin strips thoroughly with paper towels on a cutting board, then immediately wash hands and clean cutting board to prevent cross-contamination.
Season the beef strips evenly on all sides with 2 g of fine sea salt and 1 g of freshly ground black pepper.
Heat 15 ml of vegetable oil in a large skillet over high heat until shimmering hot at 200°C (392°F).
Add the seasoned beef strips to the hot skillet in a single layer using tongs, sear undisturbed for 90 seconds, then turn and cook for 60 seconds until deeply browned and the internal temperature reaches at least 63°C (145°F) on an instant-read thermometer.
Transfer the seared beef strips using tongs onto a clean plate and allow them to rest for at least 3 minutes to lock in juices.
Reduce skillet heat to medium at 175°C (347°F), melt 15 g of unsalted butter in the pan, and add 135 g of sliced yellow onion along with 250 g of sliced cremini mushrooms.
Cook the mushrooms and onions, stirring frequently with a wooden spoon for 6 to 8 minutes, until the vegetables release their liquid, turn golden brown, and soften.
Add 9 g of minced garlic to the skillet and stir constantly with the wooden spoon for 30 seconds until aromatic.
Sprinkle 15 g of all-purpose flour over the vegetables and stir continuously with the wooden spoon for 1 minute to cook the raw starch.
Pour 240 ml of beef stock, 15 g of Dijon mustard, and 10 ml of Worcestershire sauce into the skillet, stirring vigorously with the wooden spoon to deglaze and release all browned fond from the bottom.
Bring the sauce to a gentle simmer over medium heat at 95°C (203°F) and cook for 3 minutes, stirring occasionally with the wooden spoon, until thickened.
Lower heat to low at 70°C (158°F), then stir in 120 g of room-temperature sour cream, the remaining 15 g of unsalted butter, remaining 2 g of fine sea salt, and remaining 1 g of black pepper using the wooden spoon until a silky sauce forms without boiling.
Return the rested beef strips along with any accumulated plate juices into the skillet, stirring gently with the wooden spoon for 1 minute just until heated through and coated.
Remove the skillet from the heat source and garnish the dish with 10 g of finely chopped fresh flat-leaf parsley before serving.
Chef's Notes
- Always pull the sour cream from the refrigerator 30 to 45 minutes prior to cooking so it reaches room temperature; cold cultured dairy breaks quickly when exposed to hot acidic liquids.
- Do not crowd the skillet when searing the beef; batch cooking ensures an intense Maillard crust rather than gray, steamed meat.
- Resting the whole cut strips for at least 3 minutes after reaching 63°C (145°F) allows the interior juices to redistribute and keeps the beef tender when reintroduced to the sauce.
- Cremini mushrooms contain less moisture and higher umami content than white button mushrooms, yielding richer caramelization in the fond.
Storage
Refrigerator: 3 days — Cool promptly and store in an airtight container within two hours of cooking.
Reheating: Reheat gently in a skillet over low heat or in a microwave, stirring occasionally, until the internal temperature reaches at least 74°C (165°F). Add a splash of beef stock to loosen the sauce if needed.
Troubleshooting
The creamy sauce appears separated, grainy, or oily rather than smooth and glossy.
Cause: The sour cream was added cold straight from the refrigerator or the sauce was allowed to boil vigorously after adding dairy.
Fix: Remove pan from heat immediately and whisk in 15 to 30 ml of warm beef stock or heavy cream vigorously to bring the emulsion back together.
Prevention: Bring sour cream to room temperature before adding, keep pan temperature at or below 70°C (158°F), and never boil after sour cream is incorporated.
The beef strips feel tough and chewy instead of tender.
Cause: The beef strips were overcooked during the initial sear or boiled too long inside the sauce.
Fix: Cannot be fixed once muscle fibers have seized; slice strips thinner across the grain before serving to reduce chewiness.
Prevention: Sear meat in a smoking-hot skillet for no more than 2 to 3 minutes total until it reaches 63°C (145°F), rest for 3 minutes, and reintroduce only at the final minute of cooking.
Cultural Context
Originating as an adaptation of nineteenth-century Russian beef Stroganoff, this skillet dish blends quick French sauté methods with hearty mid-century American weeknight dining. Combining seared beef, earthy mushrooms, and a tangy sour cream gravy, it remains a beloved comfort staple traditionally served over buttered egg noodles or mashed potatoes.
