Peel onions and garlic. Cut onions into fine rings, chop garlic finely. Wash the thyme and remove the leaves.
Fry the onions and garlic in 2 tbsp. hot fat until golden brown. Deglaze with wine and 2 l water, bring to the boil. Season with broth, half of thyme and pepper. Simmer covered for about 20 minutes.
Spread the baguette with ground pork, press down gently. Fry the remaining hot fat on the mead side first, then the bread side. Remove.
Season soup with salt, pepper and 1 pinch of sugar. Distribute into ovenproof soup bowls. Place the mead croutons on top. Sprinkle with cheese and remaining thyme. Bake under the hot grill or at maximum oven temperature for 4-5 minutes.