In a mortar and pestle add 1 tablespoon of the sugar, and the mastic, and crush them into a fine powder.
Heat the milk and cream in a saucepan over medium heat. Add the rest of the sugar and stir until completely dissolved.
In a small bowl, mix salep powder with a bit of cold milk to form a smooth paste.
Slowly add salep mixture to the milk mixture, stirring constantly to avoid lumps.
Add the mastic powder to the saucepan and continue stirring to ensure everything is well combined.
Cook the mixture over low heat, stirring continuously. This step is crucial as it helps develop the stretchy texture. You’ll notice the mixture thickening and becoming more elastic. This process can take around 25-30 minutes depending on the quality and pureness of the salep powder, so patience is key.
Once the mixture has thickened, remove it from the heat, place it in a container, and whisk it for 10 minutes with a hand blender until it cools down.
Place the container in the freezer. Every 30 minutes, take it out and stir vigorously with a whisk or a spoon. Scrape any ice crystals that form on the bowl. This helps in incorporating air and breaking down ice crystals, ensuring a smooth texture.
After about 3-4 hours, the ice cream will start to set and it will be harder to whisk. When your ice cream has a chewy gum texture, it means it is ready to consume.
Freeze for 3 hours and your ice cream is ready to serve! Leave it at room temperature for 10 minutes before serving to make scooping easier.