Witch's cheese is a typical Dutch cheese spread, made from cream cheese, garlic and leek. In Holland it's called Heksenkaas. It's ready in about 10 minutes.
Sounds like a yummy dip in spite of the spooky name. 
This cheese dip was created during Halloween, that's the reason for its spooky name. Not sure if that's true, but that's what the internet makes us to believe haha :) 
It turned out so bitter that I cannot eat it. Maybe even worse when I have tried arugula pesto.
Adding 2 tsp of sugar did not help. What can I do?
Hi Christine, so sorry to hear! There's no bitter ingredient in this heksenkaas, so I have no idea what you exactly mean. You also don't like arugula pesto? Maybe you just simply don't like that kind of dishes, because arugula pesto doesn't have any bitter ingredients as well.. 
Maybe the lemon was bitter.
Usually lemons aren't bitter, but it can be if you use the whites of the peel. In this recipe you only use the juice, did you ever had bitter lemon juice Robert? I never had to be honest :) But I do know some people (like my husband) have a different taste palette, they taste things as bitter that really aren't. 
It's described as containing garlic. Somehow, I could not find reference to garlic in the recipe or ingredients list. Not every herbed cream cheese contains garlic. In fact, most don't. Probably should revise to explicitly include garlic.
Almost any herbed cream cheese contains garlic, but I would include it to the ingredient list to make it even more clear (although the package even has a drawing of garlic) :) 
