Dissolve sugar in a pot of water and simmer until it becomes a syrup (about 8 - 10 minutes).
Stir in rose water and allow to cool.
Preparation baklava
Toast nuts in a pan without fat until they start to smell. (Please be careful that they do not get too dark!).
Chop toasted nuts with a food processor or knife and set aside.
Preheat oven to 180°C.
Melt ghee in a saucepan.
Unfold filo dough and cut to fit baking dish.
Place 1 layer of filo pastry in the mold and brush with ghee. Repeat this process 7 times so that you have 8 buttered layers.
Spread nuts on top layer.
Now place another layer of filo pastry on top of the nuts and brush with ghee. Repeat this process 9 times so that you have 10 buttered layers.
Cut baklava into lozenges with a sharp knife, place in oven and bake for about 30-35 minutes until crisp.
Remove the baklava from the oven and immediately pour the syrup over it. Depending on the sweetness, you can spread more or less on the baklava. I used about 8 - 10 tablespoons for the aforementioned mold. Each piece needs to get some syrup off.
Top with ground pistachios or nuts to taste and let cool.