Directions:
Mix the ingredients for the batter in a large bowl and let it sit for about 10 minutes.
Clean the shrimp (peeling and deveining), cut in half and set aside in a bowl. Remove the fat from the pork and thinly slice into strips. Clean and dice the scallions. Mix the shrimp, pork, and scallions in a bowl with the fish sauce and ground black pepper to marinate for a few minutes.
In the meantime, clean the mushrooms with a damp cloth and cut into slices.
For the filling, there are 2 ways that it is done. One way where the raw meat and veggies are put directly into the crepe as it cooks. The other way which I think is better for making sure that the meat is cooked through, is to sautéed the pork and shrimp before you begin making the crepes. After cooking the meat set aside in a bowl.
In your wok or skillet, heat about a tablespoon of oil over medium-high heat. Swirl the oil around so that the pan is completely covered. Now the goal is to get the crepe as thin and crispy as possible. Put about a half a cup of the batter into the pan. Immediately swirl the batter around so that it is evenly spread over the skillet and the layer is very thin. As the batter cooks it will making a sizzling sound and bubble slightly. Now it’s time for the filling. On one half of the crepe, put a few tablespoons of pork and a few shrimp, topped with some mushrooms and bean sprouts. Allow to cook for a few minutes until the edge of the crepe has pulled away from the pan. Now use your spatula to lift the crepe and check for a nice golden brown color. If you are happy with the color and crispiness of the crepe, fold over and place on a plate for serving.