Add 1 tbs soy sauce and roughly half the garlic to thethinly sliced beef and allow for the beef to marinate for 5-7 min if you'reusing a particularly tough cut of meat consider adding 1/4 tsp of baking sodaalong with the soy sauce and let it marinate for 30 min.
SAUCE
In a small bowl, combine remaining 4 tsp soy sauce, oystersauce, red wine vinegar, Aji Amarillo paste, and cornstarch whisk to combine and set aside.
STIRFRY
Add about tsp of cooking oil to a hot cast iron plate or wokuntil it shimmers. Brown the beef for roughly 1-2 min flipping as needed tocook evenly. You might want to do this in batches if you're working with asmall. You want the beef to sear not steam! Remove to a plate. Add another tspof oil if the pan is dry.
Add the onions and sauce them for 1 min before addingremaining garlic and tomatoes. Continue to sauté for 1 min, then add the beefback for 1 min then add the beef back into the pan. you’d also add the Frenchfries here if you wanted to cook them with the sauce.
Drizzle with he prepared sauce and toss to combine. Top withsliced scallions or chopped cilantro and serve warm with rice and with Frenchfries.
NOTES
Make sure you cut the steak againt the grain. For detailed ionstructions on how to do so, see post.