1. Coarsely chop the Halepian nuts. Place the heavy cream and powdered sugar in the mixer bowl and beat on medium speed until fluffy, about 5-6 minutes.
2. Reduce the speed and add the strained yogurt, rose water, mastic, and the Halepian nuts (set aside 3 spoons for sprinkling).
3. In a nice serving platter, break some biscuits and place a layer of cream on top. Add pomegranate seeds, broken biscuits, cream, pomegranate seeds, biscuits, and finish with cream, pomegranate seeds, and sprinkle with Halepian nuts.