Add almonds, cashew nuts, black peppercorns, green cardamoms, white poppy seeds, fennel seeds, melon seeds, 15-20 strands of saffron and dried rose petals to the medium jar of a grinder or a food processor and grind to make a fine powder.
Do not over-grind otherwise, the nuts will release their oil and the powder will become sticky. Just pulse a few times. Then let the mixture cool down for 5 minutes. Pulse again and keep cooling the mixture in between. Pulse until a powder is made.