Bring the water to the boil, salt it, season with a pinch of white pepper, add the rice and the butter.
Cook over low heat, covered, for about 15-18 minutes, until the rice is soft and holds together densely.
Spread the hot rice onto a buttered baking sheet about 1.5 cm thick, and let it cool completely.
Once cool, cut out small discs with a round cutter.
Coat the discs in flour, beaten egg, then breadcrumbs, and fry in hot lard until golden on both sides.
Meanwhile make the filling: briefly fry the finely chopped goose liver (or ham) in butter, add the broth and the cream, simmer for 2-3 minutes, season with salt and pepper.
Make a dent in or halve the still-warm fried rice discs, and fill them with the goose liver or ham ragout.
Arrange on a platter, keep warm in the oven, and serve immediately.
Based on: Malatinszky Fanny szakácskönyve (a classic Hungarian cookbook), modernised. Calories and protein are estimated.