Beef Bulgogi

Bahan-bahan (4 porsi)

• 2 pounds ribeye steaks
• Heaping ¼ teaspoon baking soda
• 1½ tablespoons vegetable oil, (plus 2 teaspoons more for cooking)
• 1½ teaspoons sesame oil
• ¼ cup soy sauce
• 3 tablespoons (packed) dark brown sugar
• 2 cloves garlic, (roughly chopped)
• 1 small shallot, (roughly chopped)
• 1 tablespoon roughly chopped fresh ginger, (from a 1-inch (2.5-cm) knob (see note))
• Heaping ¼ teaspoon crushed red pepper flakes
• 2 scallions, (dark green parts only, thinly sliced, for serving)
• 1 teaspoon sesame seeds, (for serving)