Cut the fennel, onion and clove of garlic into small cubes.
Fry in a pan in the oil for 10-15 minutes, depending on how firm you want the vegetables to be. Add the pinch of sugar and mustard (I used Dijon mustard in this case, but anyone else can do it too). Stir in the butter and deglaze with the wine. Let everything simmer for about 5 minutes and finally stir in the cream cheese.