Put oil in the cooking pot and press SAUTE.
When oil begins to sizzle, brown meat in batches until all meat is browned. Transfer Meat to plate once browned.
Add the garlic and saute one minute. Add soy sauce, 1/2 cup water, brown sugar, and ginger. Stir to combine.
Add browned beef, place lid on top of Instant Pot.
Press the MANUAL or PRESSURE COOK button.
Set timer for 11 minutes.
When cooking is finished, move the knob to VENTING and do a QUICK RELEASE of the pressure.
Combine the cornstarch and 3 tablespoons water, whisking until smooth. Add cornstarch mixture to the sauce in the pot, stirring constantly.
Push the Saute button and bring to a boil, stirring constantly until sauce thickens. Stir in green onions. Serve over rice.