Peel and halve the kohlrabi. Remove the inside and cut into small pieces
Finely dice the ham. Wash and chop the herbs. Bring milk and 1 pinch of salt to the boil. Stir in the puree flakes. After 1 minute stir in ham and half of the herbs. Season to taste with salt and nutmeg
Fill the kohlrabi with the puree. Bring 1/8 l water and stock to the boil. Add the kohlrabi and pieces. Steam covered for about 35 minutes
Lift out the kohlrabi and puree the sauce finely. Stir in remaining herbs and sour cream. Season to taste with salt and pepper. Arrange the kohlrabi with the herb sauce