olive oil • unsalted butter, plus 10 g for greasing the cake tin • onions, cut into 1 cm dice (250 g) • celery sticks, cut into 1 cm dice (140 g) • large carrot, peeled and cut into 1 cm dice (100 g) • garlic cloves, crushed • potatoes, peeled and cut into 1 1/2 cm dice (200 g) • turnip, peeled and cut into 1 1/2 cm dice (200 g) • wagyu beef, cut into dice • baharat spice • tomatoes, chopped (200 g) • tomato paste •