Black Pepper Beef Stir-Fry with Mushrooms and Truffle Sauce

Quick Answer

This black pepper beef stir-fry with truffle sauce combines precisely cut beef tenderloin, cremini and shiitake mushrooms, yellow onion and a measured soy-and-oyster sauce. Cook the beef in two uncrowded skillet batches to at least 71°C / 160°F, thicken the clean sauce with a separate cornstarch slurry, then add 50 g Terra Ross Truffle Sauce - Salsa Tartufata away from direct high heat. It makes four main-course servings in 45 minutes.

Recipe at a Glance

Why This Recipe Works

Uniform tenderloin strips and two uncrowded batches support even skillet cooking. A thin-tip thermometer, not minutes, colour or firmness, establishes the endpoint. No marinade or velveting contacts the raw beef.

The homemade black pepper sauce combines measured soy sauce, oyster sauce, water and medium-coarse pepper. A separate slurry thickens it after the mushrooms cook. Salsa Tartufata enters away from direct high heat.

Ingredients

• 500 g beef tenderloin, chilled, boneless, intact whole-muscle, not mechanically tenderized, injected or reconstructed, trimmed of silverskin and cut across the grain into strips approximately 8 mm thick, 1.5 cm wide and 5 cm long
• 20 ml refined olive oil
• 150 g fresh cremini mushrooms, briefly rinsed, dried thoroughly, stem ends trimmed and sliced approximately 5 mm thick
• 100 g fresh shiitake mushrooms, briefly rinsed, dried thoroughly, tough stems removed and caps sliced approximately 5 mm thick
• 150 g yellow onion, peeled and cut into approximately 5 mm dice
• 8 g fresh ginger, finely grated
• 30 g spring onions, rinsed, dried and thinly sliced
• 30 ml low-sodium light soy sauce
• 30 ml oyster sauce
• 8 g whole black peppercorns, freshly cracked to a consistent medium-coarse grind and divided
• 150 ml water, divided between the sauce and slurry
• 10 g cornstarch
• 50 g Terra Ross Truffle Sauce - Salsa Tartufata

Ingredient Notes

Beef tenderloin

Use chilled, boneless, intact whole-muscle tenderloin. Check its label; if it identifies mechanical tenderization, injection or reconstruction, follow package-specific instructions instead of this method. Thaw frozen beef completely in the refrigerator. Trim silverskin and cut across the grain to the specified dimensions.

Cremini, shiitake and aromatics

Use 150 g cremini and 100 g shiitake. Briefly rinse and dry them, discard tough shiitake stems and make 5 mm slices. Yellow onion is the only diced vegetable; ginger cooks for the final 30 seconds, and spring onions are the only vegetable garnish.

Black pepper sauce and slurry

Crack 8 g peppercorns to medium-coarse: 6 g for sauce and 2 g for finishing. Combine 30 ml each soy and oyster sauce with 120 ml water. Mix the remaining 30 ml water with 10 g cornstarch separately.

Soy is definite; molluscs are expected from oyster sauce. Check labels for wheat/gluten, fish, sulphites, other allergens and cross-contact. Sodium varies, so no separate salt is used.

Salsa Tartufata

The declaration lists cultivated mushrooms (Agaricus bisporus), sunflower oil, 3% summer truffle (Tuber aestivum), salt, pepper, garlic and truffle aroma. It is prepared sauce, not pure, fresh truffle or truffle oil. See the Black Truffle Guide.

Equipment

• One large 30 cm heavy stainless-steel skillet
• Clean thin-tip instant-read thermometer
• Kitchen scale and liquid measure
• Two clean bowls for sauce and slurry
• Separate raw-beef and produce boards and knives
• Separate clean tongs and plate for cooked beef
• Spatula and spoon for stirring and checking sauce consistency

Complete Step-by-Step Method

1. Prepare the beef safely

   Keep the 500 g tenderloin refrigerated; thaw frozen beef completely in the refrigerator. Check the label and do not use this method for mechanically tenderized, injected or reconstructed beef. Trim silverskin, then slice across the grain into strips approximately 8 mm thick, 1.5 cm wide and 5 cm long. Wash hands after raw contact and separate its equipment.

2. Prepare the mushrooms, onion, ginger and spring onions

   With clean produce equipment, briefly rinse and thoroughly dry the 150 g cremini and 100 g shiitake mushrooms. Trim cremini stem ends, discard tough shiitake stems and slice both 5 mm thick. Dice the 150 g onion to 5 mm, grate the 8 g ginger, and rinse, dry and slice the 30 g spring onions. Keep produce away from raw-beef surfaces.

3. Mix the black pepper sauce and slurry

   In one clean bowl, mix 30 ml soy sauce, 30 ml oyster sauce, 120 ml water and 6 g black pepper. In another, mix 10 g cornstarch with the remaining 30 ml water. Keep both mixtures away from raw beef and its utensils.

4. Cook the first beef batch

   Preheat the empty 30 cm heavy stainless-steel skillet over medium-high. Add part of the 20 ml oil, then approximately 250 g beef in an uncrowded layer. Turn as needed; time and colour are only workflow cues. Check several thick representative strips in more than one area with a clean thin-tip thermometer. Require 71°C / 160°F before transfer to a clean plate.

5. Cook and verify the second beef batch

   Use remaining oil as needed and cook the remaining beef without crowding. Replace or fully sanitize raw-contact tongs. Check several thick representative strips in more than one area and require 71°C / 160°F. Transfer to the clean plate; no rest is required.

6. Cook the onion, mushrooms and ginger

   Replace raw-contact utensils. Use remaining oil only if needed. Cook the 150 g onion over medium-high for about 2 minutes. Add both mushrooms and cook for 6–8 minutes until most moisture evaporates and they are lightly browned. Add the 8 g ginger for the final 30 seconds.

7. Add the black pepper sauce

   Stir the clean sauce, add it to the vegetables and bring to a controlled simmer for 1–2 minutes. Loosen only cooked residue. Keep the slurry separate and add no unmeasured liquid or seasoning.

8. Thicken the sauce

   Restir the slurry, add it gradually while stirring, and simmer for 1–2 minutes. Stop when the sauce is glossy, lightly coats a spoon and a spatula trail closes slowly. Do not over-reduce.

9. Add Salsa Tartufata and return the beef

   Remove the skillet from direct high heat and stir in exactly 50 g Salsa Tartufata. Return the beef and toss over low heat for no more than about 1 minute without boiling. Add no other truffle product or salt.

10. Finish with spring onions and black pepper

    Divide everything among four servings. Finish evenly with all 30 g spring onions and the remaining 2 g black pepper. Serve promptly without additional seasoning, sauce or sides.

Beef and Vegetable Food Safety

Refrigerate raw beef and thaw it only in the refrigerator. Check its label, wash hands after contact and separate its packaging, juices, boards, knives, plates and tongs from produce and cooked food. Never return cooked beef to a raw-meat plate.

Check several thick strips per batch in more than one area with a clean thin-tip thermometer and require 71°C / 160°F. Minutes, browning, firmness, juices and touch do not prove safety. Keep sauce and slurry away from raw beef.

Use clean produce equipment. Rinse and dry mushrooms and spring onions, remove damaged areas, discard spoiled produce and refrigerate perishables at or below 4°C / 40°F.

Troubleshooting

Substitutions and Variations

No second formula is provided. Changing the beef, mushrooms, sauces, thickener or truffle product changes timing, allergens and identity. This beef and mushroom stir-fry uses thirteen ingredients.

Marinade, velveting, prepared pepper sauce, other vegetables, garlic, sugar, stock, vinegar, sesame oil, extra seasoning, truffle oil and alcohol additions are excluded. Prepared-product labels still govern.

Make-Ahead, Storage and Reheating

Prepare clean sauce, slurry and vegetables while beef stays refrigerated. Restir both mixtures before use and keep them away from raw-beef equipment.

Refrigerate leftovers within two hours in shallow, covered containers at or below 4°C / 40°F. Use within three days. Although opened Salsa Tartufata allows 4–5 refrigerated days, the shorter cooked-dish limit governs.

Reheat only what is needed, stirring, until representative beef and sauce portions reach 74°C / 165°F. Add no extra truffle product and do not repeatedly reheat.

For other governed beef preparations, see pan-seared ribeye with black truffle cream sauce, teriyaki-inspired beef rice bowls, Mongolian-inspired ground beef noodles, or browse the complete Terra Ross recipe collection.

Frequently Asked Questions

Why is beef tenderloin cut into exact strip dimensions?

Strips approximately 8 mm thick, 1.5 cm wide and 5 cm long reduce large size differences and make batch cooking and representative thermometer checks more consistent. Cut across the grain after trimming silverskin.

Does this recipe use a marinade or velveting method?

No. The beef receives no cornstarch, baking soda, egg white, soy sauce, oyster sauce, water, sugar, salt, alcohol or oil coating. Cornstarch is used only in the clean sauce slurry.

How much black pepper is used and how coarse should it be?

Crack exactly 8 g whole black peppercorns immediately before cooking to a consistent medium-coarse grind. Use 6 g in the clean sauce and the remaining 2 g over the completed dish.

Is the black pepper sauce homemade?

Yes. Mix 30 ml low-sodium light soy sauce, 30 ml oyster sauce, 120 ml water and 6 g black pepper. Thicken it later with a separate slurry of 10 g cornstarch and 30 ml water.

Which allergens should be checked in soy sauce and oyster sauce?

Soy is definite from soy sauce, and molluscs are expected from oyster sauce. Check current labels for wheat/gluten, fish, sulphites, other allergens and cross-contact because formulations vary.

How is the sliced beef checked with a thermometer?

Use a clean thin-tip instant-read thermometer on several of the thickest representative strips from each batch and check more than one area. Require at least 71°C / 160°F before transferring beef to the clean plate.

Which exact Terra Ross truffle product should be used?

Use exactly 50 g Terra Ross Truffle Sauce - Salsa Tartufata from the approved product path. Equal division provides 12.5 g in each of four servings.

Why is Salsa Tartufata added after the sauce thickens?

The measured product is kept out of searing and high-heat reduction. Remove the skillet from direct high heat, stir it in, then return the cooked beef for no more than about 1 minute over low heat without boiling.

How should leftovers be cooled and stored?

Refrigerate leftovers within two hours in shallow, covered containers at or below 4°C / 40°F. Use them within three days and follow any shorter instruction on a packaged ingredient.

How should the stir-fry be reheated safely?

Reheat only the portion needed while stirring the sauce, until representative beef and sauce portions reach 74°C / 165°F. Add no extra truffle product and do not repeatedly reheat.

Sources and Further Reading

• FoodSafety.gov: Cook to a Safe Minimum Internal Temperature
• USDA FSIS: Beef From Farm to Table
• USDA FSIS: Mechanically Tenderized Beef
• FDA: Selecting and Serving Produce Safely
• FDA: Refrigerator Thermometers - Cold Facts about Food Safety
• FDA: Food Allergies