Set the Instant Pot to SAUTÉ and add the oil then the onion, (bell) pepper and aubergine/eggplant. If the ingredients start to stick a little (aubergine/ eggplant tends to act like a sponge to oil and suck it all up) then adjust the sauté to LOWER using the SAUTÉ button or dial.
Sauté until the aubergine/ eggplant is soft and the onion transparent. Add the spices and garlic then the beans, tomatoes and soy sauce.
Set to PRESSURE for 3 minutes. NPR at the end of cooking then remove the lid and stir in the chocolate.
Serve with all or any of the suggested garnishes and/or accompaniments, as preferred.