You can certainly make the kunafa and pistachio filling from scratch. You will need approximately 790 Grams (4 & 1/2 cups) of ready made pistachio cream or pistachio sauce, and about 280 grams (approximately 3 cups of shredded kunafa). Note that if you are using pistachio cream or sauce, you can skip making the pistachio paste altogether and simply mix the pistachio cream/sauce with the shredded toasted kunafa. Read the instructions on how to test the kunafa in the instructions before proceeding.