To make the syrup, mix the sugar and water throughly and cook over high heat carefully, making sure the sugar doesn't crystalize. Do not stir. This takes about ten minutes and will burn quickly.
Have your flan pan ready - you're going to be working fast.
Carefully swirl the hot sugar syrup all around the pan, covering sides and bottom well. Set aside.
Whisk together all the flan ingredients - you can also use a blender for this.
Pour into flan pan and bake in a water bath for about 1 hour, until not jiggly in the center.
Let sit overnight and to unmold, place pan in warm water to loosen syrup.