Slow-cooked carne asada-style beef with bright citrus, garlic, and warm spices for easy, ultra-tender street tacos made entirely in the slow cooker. Finish under the broiler for crispy edges and pile into warm tortillas with classic toppings.
Serves about 12–16 street tacos depending on filling. Taste and adjust salt at the end since soy sauce adds salinity. For extra heat add more red pepper flakes, a diced jalapeño, or chipotle in adobo. Meat can be made ahead; it improves after resting in its juices. Store beef with its liquid up to 4 days refrigerated or 3 months frozen; reheat with a splash of juices and broil briefly to re-crisp. Warm tortillas just before serving.