well, mixed it with some water (warm water since it seems to mix better), I didn't really use any measurement.. guess it would be about 5-8 table spoons? The paste was thick and did not want to come off the spoon by itself - let's put it like that.
Used cling film (no foil in the house, damn housemates lol) and just put the paste onto it, trying to form something that would look like a proper choc-bar.
(I must add that this paste looks really dodgy- the scared face of my housemate said it all when he walked into the kitchen as I was doing it).
Then just threw it in the freezer for about 2 hours so it gets solid and 'unpacked'.. and almost swallowed it whole lol.