To make the sauce. Take a separate bowl, add beef stock, water, soy sauce and cornstarch then mix it well. Set aside
In another separate bowl, add the beef, turmeric and season it with salt and pepper.
Take a multicooker, open and unlock the lid by turning the handle to the unlock position. Pour the beef into the cooker then close and lock the lid by turning the handle to the lock position.
Press the [MENU SELECTION] button to select the [MULTICOOK] function. Set the cooking time for 10 minutes and temperature 120 degrees then press [COOK]
Once the cooking time is finished, open and unlock the lid by turning the handle to the unlock position. Take out the beef into a separate plate then set aside. With the lid still open, turn the handle to the lock position.
Press the [MENU SELECTION] button to select the [MULTICOOK] function. Set the cooking time for 10 minutes and temperature 120 degrees then press [COOK]
Add the vegetable oil into the cooker, add mushroom and green bell peppers. Stir until the vegetables are al-dente for 6 minutes. Add the broth mixture, bring it to a boil and let it simmer for 2 minutes. Add the beef mix well to coat it with the sauce.