1large jar/can of beans or two small ones, about 680g (24 oz) net weight, with a drained weight of about 500g (17.6 oz). Keep the liquid, we're using that too!
Clean the parsley (if using) and chop it finely, setting a couple of leaves aside for garnish.
Peel and finely chop the onion. In a pan, cook it with the olive oil over medium heat until translucent.
Add the chopped celery stalks and cook on high heat with the lid on for about 4 minutes, stirring two or three times. You want the celery to start softening.
Stir in the chili powder and smoked paprika, letting them cook for a few seconds until fragrant.
Add the tomato purée or passata, beans (with the liquid from the can/jar!), and smoked salt. Cover and let simmer over medium heat for 5 minutes, stirring occasionally, until the celery is tender.
Stir in the molasses, miso paste (if using), and pepper to taste.
Turn off the heat and stir in the parsley (if using). Serve with an extra sprinkle on top."