Measure out the water, add the brown sugar and vanilla sugar, and make a sugar syrup. Then add the roasted pumpkin.
Season with the spices and add the freshly squeezed orange juice. Then strain the syrup through a fine mesh sieve and pour into a clean, sterilised jar.
I use the leftover spiced pumpkin puree to make pumpkin kugel, or if I don't want to bake, I mix it with natural yoghurt and make delicious spiced pumpkin yoghurt. It sounds strange, but it's delicious.
The pumpkin syrup will keep for about 1-2 weeks in the fridge. We tend to use it up in that time, but feel free to halve the portions in the recipe if it's too much for you.