Rinse and then soak almonds and pistachios in a 1 cup hot boiling water for 20 minutes.
Drain the water and peel off skins from both almonds and pistachios. It should come off easily.
In a grinder grind the blanched nuts, 1 tablespoon sugar and milk until smooth and set aside.
In a sauce pan add the heavy cream, remaining 3 tablespoons of sugar, saffron, cardamom powder and the nuts mixture and bring it to light boil. Around 180 F.
Meanwhile in a small bowls add gelatin and cold water and allow it to sit and bloom for 5 minutes. Be sure that all the gelatin powder is submerged in the water. If there is any dry gelatin left in the bowl, sprinkle some water over it.
Once bloomed, microwave the gelatin mixture over an interval of 30 seconds until it is melted.
Whisk the gelatin gently into the heavy cream mixture and pour the panna cotta into a measuring cup or pourable pitcher.
Pour the mixture into your prepared glasses/containers and place in the fridge until set, about 2 hours. This will easily fill four 4 oz glasses.
Refrigerate until ready to serve. Garnish each panna cotta chopped roasted nuts.