The Deep Clean Velvet: Slice the beef thinly against the grain. Massage with baking soda and let sit for 15–20 minutes. Thoroughly rinse under cold water and pat completely dry with paper towels (skip this entire step if using pre-sliced beef).
Quick Marinate: Toss the dry beef with oyster sauce, soy sauce, chicken bouillon, black pepper, and a tiny bit of oil.
Blanch the Beans: Drop beans into boiling water for 1–2 minutes. Immediately remove and shock in cold water to preserve the snap and color.
Sauté Aromatics: Heat oil in a wok and toss in the minced garlic and shallots until fragrant.
Sear the Beef: Add the beef in a single layer. Let it brown deeply before tossing to ensure a good sear.
The Toss: Add the blanched beans, green onions, and Fresno peppers to the wok.
Season: Finish with a splash of fish sauce, additional chicken bouillon, and a pinch of sugar to bring all the flavors together.