Put the pepper steak in a large mixing bowl. In a separate bowl, mix the baking soda and water and then add to the meat. Stir to coat. Allow the meat to sit for 5 minutes.

Make a marinade/coating for the beef by mixing the soy sauce, brown sugar, and rice vinegar in another mixing bowl. Add the corn starch to the mixture, stirring until completely dissolved. Pour the marinade over the meat and stir to coat. Allow the meat to marinate for 15 minutes.

Add 2 tablespoons of oil to your wok or frying pan and put over the highest heat your stove can muster. Once the oil is hot, add half of the beef, making sure there is space between each piece. If the pan is too small to fit half the meat without pieces touching, then work in smaller batches. Cook the beef on each side until browned, and repeat with the other half of the meat. Add more oil between batches if necessary.

Once all of the meat is cooked remove it from the pan. Add 2 more tablespoons of oil and the onions, stirring constantly. Once the onions begin to soften add the broccoli(ni). Keep the onions and broccoli moving until the broccoli begins to soften and get some color.

Add the meat back into the pan along with the brown sauce and cook until the sauce reaches your desired consistency.

Serve over rice and garnish with the scallions.