Bring 400 ml water, milk, 1 teaspoon salt, broth and 2 tablespoons butter to the boil. Stir in polenta, bring to the boil again, cover and let it swell for about 10 minutes on the switched off hotplate. Stir from time to time.
Spread the mixture about 2 cm thick on a greased baking tray and let it cool down for about 1 hour.
Wash bay leaves. Pluck the leaves, except for a few leaves at the end of the stem. Cut 6 large bay leaves finely (use the remaining leaves for other purposes). Peel and chop the garlic.
Crush the laurel and garlic in a mortar to a pasty mass. Stir in 2 tablespoons of oil.
Dab meat dry and cut into large cubes (approx. 3 x 3 cm). Stick them onto the branches, possibly pierce them beforehand with a shish kebab skewer (or stick them directly onto skewers).
Cut polenta into cubes (approx. 4 x 4 cm). Heat 2 tablespoons of butter and 2 tablespoons of oil in a frying pan. Fry polenta in 2-3 portions until golden brown, adding 1 tablespoon butter and about 3 tablespoons of oil little by little.
Grill or roast meat skewers. To fry, heat 3 tablespoons of oil in a large pan and fry the skewers in portions for about 2 minutes. Season with salt and pepper and brush with bay leaf paste.
Fry for 1-2 minutes more. Finish cooking the skewers on an oiled baking tray in a preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for approx. 5 minutes. Serve with a mixed salad.
Drink tip: Red wine from the Portuguese mainland, for example Aragonez.