Rinse dry chickpeas under cold water to remove dust or debris. Note: Soaking is optional with the Instant Pot, but soaking for 8–12 hours (or overnight) makes them cook more evenly and gives a creamier aquafaba.
Drain the soaking water and place your chickpeas into the Instant Pot. Add 1 litre of fresh water.
Pressure Cook the Chickpeas - Soaked chickpeas: Cook on High Pressure for 25–30 minutes, then natural release for 15 minutes. - Unsoaked chickpeas: Cook on High Pressure for 40–45 minutes, then natural release for 20 minutes. Please note: The beans should be tender but not mushy.
Place a fine mesh sieve over a large bowl and carefully drain the chickpeas. The golden liquid that collects underneath is your aquafaba.
Allow the aquafaba to cool completely before transferring it to a clean jar (I’d like to leave it in the pot overnight).
Store in the fridge for up to 5–6 days or freeze in ice cube trays for longer storage (great if you only need a tablespoon or two at a time).