Melt the butter with a splash of oil in a large saucepan, and add the onion, garlic, celeriac and potatoes. Fry well for about 20 minutes, or until the celeriac is lightly golden. Stir in the ground coriander and thyme and season with freshly ground pepper.
Pour in the stock, cover with a lid and simmer gently for about 20 minutes, or until all the vegetables are completely tender.Meanwhile, make the brændende kærlighed.
Add the cream and blend the soup until completely smooth with a stick blender, or transfer it to a blender. It should be completely smooth and creamy.
Season the soup to taste with lemon juice, salt and freshly ground pepper.
Brændende kærlighed topping
Melt the butter in a frying pan over medium heat and fry the bacon until lightly golden. Then add the onion and fry for 5-8 minutes until it caramelises slightly.If your bacon is very fatty, you can halve the amount of butter.
Turn down the heat and stir in the chives. Season with freshly ground pepper and set aside until the soup is ready to serve.
Serving
Serve the soup in deep bowls, top with crème fraîche and several spoonfuls of the brændende kærlighed. Season with freshly ground pepper.