Yogurt and Lemon Granita With Mastic

Preparation

1. Step 1

   Cut an 8-inch square of cheesecloth, put the mastic in the center, and tie into a neat bundle with string. Bring 3 cups water to a boil in a small saucepan, submerge the mastic in the water, lower the heat and simmer for 3 minutes. Remove pan from heat; add the sugar, stirring to dissolve. Let it cool to room temperature, stirring occasionally.

2. Step 2

   Remove the mastic from the syrup. Add the lemon juice and yogurt to the saucepan and whisk vigorously until smooth.

3. Step 3

   Pour mixture into a wide, shallow pan and set on a flat surface in the freezer. After about an hour, use a fork to scrape any ice crystals from the pan's edges, incorporating them into the mixture. Repeat every hour or so until the mixture is evenly frozen. Spoon into glasses; if desired, garnish with lemon peel or mint.