Fry the minced meat with the onion and garlic cubes in a saucepan until crumbly.
In the meantime, clean the kohlrabi, remove the woody parts and cut the kohlrabi and leaves into bite-sized pieces.
When the minced meat is slightly brown, add the kohlrabi with the leaves and pour the broth over everything. Let the soup simmer over a low flame until the kohlrabi is soft or firm to the bite. Then add the beaker of crème fraîche and let the processed cheese dissolve in the soup. Bring everything to the boil again, season to taste and season to taste. A splash of lemon juice rounds off the soup.
You can serve it with potatoes, rice or pasta or just eat it like that.