Lomo Saltado (Peruvian Beef Stir-Fry)

Method

1. Marinate the beef by tossing the strips with soy sauce, red wine vinegar, cumin, salt, and pepper. Let sit for 15-20 minutes at room temperature. The soy sauce seasons the surface while the vinegar tenderizes it slightly. Don't marinate longer than 30 minutes — the acid will start to break down the texture.

2. Heat the wok over the highest heat your stove can produce for 2-3 minutes until smoking. Add 1 tbsp oil. Working in 2-3 batches, sear the beef strips for 60-90 seconds, tossing once. Each piece should have charred edges but still be pink in the center. Remove each batch immediately. The high heat and quick cooking is the Chinese stir-fry technique that defines lomo saltado.

3. Stir-fry the onions by adding another tbsp of oil to the wok. Add the red onion wedges and cook for 2 minutes over high heat — they should be slightly charred on the edges but still crisp in the center. Add the aji amarillo and garlic, cook 30 seconds.

4. Add the tomatoes and cook for 30 seconds only — just enough to warm them through. The tomatoes should hold their wedge shape, not collapse. Add the soy sauce and red wine vinegar, tossing everything together. The liquid will hit the hot wok and create a burst of steam and flavor.

5. Return the beef to the wok along with any accumulated juices. Toss everything together for 15 seconds — just enough to combine. Remove from heat immediately. Add the cilantro and toss once more.

6. Plate by placing crispy fries on one side of the plate and steamed rice on the other. Pile the lomo saltado on top, spooning the sauce over both the fries and rice. The fries absorb the soy-vinegar sauce and become the best part of the dish. Serve immediately — lomo saltado waits for no one.

Equipment

• Wok or large skillet Recommended: Joyce Chen 14-Inch Carbon Steel Wok
• Tongs Also good: Wok Spatula

Chef Notes

• The most important thing: The wok or skillet must be screaming hot. Lomo saltado is a stir-fry — the beef needs to sear in seconds, not steam in its own juices. If you don't hear an aggressive sizzle the moment the beef hits the pan, it's not hot enough.
• Cook the beef in small batches. Overcrowding drops the pan temperature and the beef steams instead of searing. You want charred edges on each strip.
• Lomo saltado is a Chifa dish — Peruvian-Chinese fusion that emerged from Chinese immigrants in Lima. The soy sauce and stir-fry technique are Chinese; the aji amarillo, tomatoes, and serving style are Peruvian. This fusion is intentional and traditional.
• The tomatoes go in last and cook for only 30 seconds. They should be warmed through but still hold their shape — not collapsed into sauce.
• Yes, fries AND rice on the same plate. This is traditional. The fries go on one side, rice on the other, stir-fry on top. The fries absorb the sauce.

Common Substitutions

Ingredient	Substitution	Notes
Sirloin or tenderloin	Flank steak, sliced thin against the grain	Slightly chewier but more affordable — slice very thin
Aji amarillo	Yellow bell pepper + pinch cayenne	Loses the fruity heat but adds the color
Red wine vinegar	White wine vinegar or rice vinegar	Rice vinegar is milder — closer to the Chifa influence
French fries	Oven-baked potato wedges	Less crispy but still provides the starchy element
Soy sauce	Tamari (gluten-free)	Nearly identical flavor — works perfectly

What You're Practicing

Lomo saltado is a masterclass in wok technique applied to South American ingredients. The high-heat searing, small-batch cooking, and rapid assembly are pure Chinese stir-fry — but the flavors (aji amarillo, tomatoes, red wine vinegar, cilantro) are distinctly Peruvian. Understanding how techniques travel across cultures and adapt to local ingredients is one of the most fascinating aspects of cooking. Visit Techniques for more on high-heat stir-fry.

The Chifa fusion tradition teaches you that great food often emerges from cultural collision. Chinese immigrants brought wok technique to Peru; Peruvians contributed their ingredients and palate. The result is something neither culture would have created alone. This same pattern appears in Tex-Mex, Japanese-Peruvian (Nikkei), and Indian-British cooking.