In a mixing bowl, combine oyster sauce, fish sauce, grated garlic, and ginger. Mix well until fully blended. Place your beef steak in a shallow dish, ensuring it's covered in the marinade, and let it sit for at least 30 minutes at room temperature.

In a skillet over medium heat, toast the glutinous rice until it turns golden brown, about 5 minutes. Once toasted, grind it into a coarse powder using a mortar and pestle or spice grinder. In a bowl, mix fish sauce, lime juice, tamarind paste, evaporated cane sugar, chili flakes, cilantro, scallion, and 2 teaspoons of the toasted rice powder. Stir until the sugar has dissolved into the zesty sauce.

Preheat your grill pan or skillet over high heat until it’s sizzling hot. Place the marinated beef on the grill, cooking for about 4-5 minutes on each side for a perfect medium-rare.

Once grilled to your desired doneness, remove the beef from the heat and transfer it to a cutting board. Allow it to rest for about 10 minutes.

After resting, slice the beef thinly against the grain to enhance tenderness. Arrange the sliced Crying Tiger Beef beautifully on a platter. Serve alongside the vibrant Nam Jim Jaew sauce and fresh veggies like cucumber slices or cabbage leaves.