Sauté the onion and garlic cubes in hot butter. Dust with flour and sweat briefly. Then deglaze with milk and wine, stirring vigorously. Pour in the hot meat stock and let the soup reduce to a creamy consistency over low heat.
In the meantime, roast the garlic slices in hot butter until golden. Remove and set aside.
Finally, season the garlic soup with salt and pepper and fold in the sour cream. Sprinkle with chives and garlic chips to serve.
Tip: Don`t let the garlic chips get too dark, otherwise they will taste bitter.