Find my Vegetable Stock Paste recipe here.
* How to set your Instant Pot to Sauté Less: Press the Sauté button immediately followed by the Adjust button to adjust to Less (or if you have v3 of the DUO, press Sauté a few times until it's set to Less).
Quick release (also called quick pressure release or QPR) means venting the steam as soon as the pressure cooking process finishes, i.e. moving the steam release handle from Sealing to Venting.
Natural release (also called natural pressure release or NPR) means letting the float valve pop back down of its own accord so, basically, you don’t need to do anything at the end and can keep your feet up. If it takes over 15 minutes, you're ok to release the rest of the steam (by turning the steam release handle to Venting) that may be left in order to unlock and open the lid.
Sometimes you'll see me talk of a combination of NPR followed by a QPR. For example, this recipe has a 4 minute QPR. You wait for 4 minutes at the end of the pressure cooking time and then do a QPR by moving the steam release handle from Sealing to Venting.