Pour the beaten egg into a fine-mesh strainer in a measuring cup. This step is super important to create that smooth, custardy texture. Note how much egg was in the measuring cup (this recipe assumes that we have about 1/3 cup of beaten eggs).
In a 1:2 ratio, add 2/3 cups chicken broth to the mixture. Add the fish sauce and stir gently to mix all the ingredients. Then wrap the bowl tightly with cling film.
Add 1 cup of water to the Instant Pot container. Since I don’t have steam rack handles for the Instant Pot (which I recommend!), I used a trivet and foil to help me remove the hot bowl once it’s done steaming. Place the bowl on the wire rack and fold the foil handle. Set the Instant Pot to Manual Low Pressure on Normal for 12 minutes.
Once the Instant Pot beeps, release the pressure and carefully remove the bowl.
Removing the cling film will leave you with a silky, smooth egg texture.
Complete this dish by adding tamari, sesame oil, white pepper, and chives. Serve with rice and eat right away.