Turn the heat under the pressure cooker to medium-high (sauté mode on an electric PC ... section for tips on make ahead freezer beans.) This recipe scales down easily - cut everything in half ...

(If using an electric pressure cooker, use the high pressure setting for 45 minutes.) Remove the pressure cooker from the heat and leave to depressurise. Preheat the oven to 200C/180C Fan/Gas 6.