3 garlic cloves, coarsely chopped.
1 large leek or onion, thinly sliced.
1 tablespoon olive oil and 1 tablespoon unsalted butter (or vegan butter).
2 sprigs thyme or 1 teaspoon dried thyme.
1 bay leaf.
½ teaspoon smoked paprika (optional).
1 teaspoon of white miso paste, giving some umami flavor
1 teaspoon of tomato paste, also giving some umami flavor (optional)
Salt and freshly ground black pepper, to taste.