Combine the correct amounts of rice and (warm) water in your Instant Pot stainless steel insert or pressure cooking pot.
Add 1 tablespoon lemon juice, raw apple cider vinegar, or other acid per cup of water.
Leave it to soak for 7 to 8 hours or overnight.
Get out a fine mesh strainer and put it inside a big bowl or another pot.
Pour the soaked rice mixture through it, so the rice is caught in the strainer and the soaking water is caught in the bowl/pot.
Put the rice back in the Instant Pot insert or pressure cooker pot.
Replace the same amount of soaking water that you just discarded — in the form of more fresh water or broth. (Broth makes yummy rice!)
Now you need to figure out how long to cook. Since your rice is soaked, the cooking times in your manual or reference are too long. Don't worry; it's easy to figure out how long to cook instead!
Get out your Instant Pot or pressure cooker manual (or the book Pressure Perfect by Lorna Sass) and look up the cooking time for your particular variety of rice.
In your head, halve this time to get your adjusted cooking time for soaked grains. (If the time is a range, you can halve the lower amount or pick a mid-range of it to halve.)
When the pressure cooking cycle is over, ideally let the pressure cooker de-pressurize naturally (about 20 to 30 minutes), or use the quick pressure release function.
Serve and enjoy!
*the example rice here is brown basmati