Make this recipe a recipe that people in that category can eat. categories: ['low_calorie'], recipe: place lemon juice, zest, and sugar in a small saucepan and stir over low heat for 5 minutes, or until the sugar is dissolved. remove from the heat and allow to cool. add 2 cups of water to the juice mixture and mix together well. pour the mixture into a shallow 12x8 inches metal container, and place in freezer until it is beginning to freeze around the edges. scrape the frozen sections back into the mixture with a fork. repeat every 30 minutes until it has evenly-sized crystals. beat the mixture with a fork just before serving. put in chilled glasses.

Target recipe: chill a rectangular metal baking pan (15 x 9 x 2) in the freezer. combine all ingredients in a blender or a large food processor until sugar dissolves (~1minute). pour the mixture into the baking pan and freeze about 30 minutes, or until crystalls begin to form. stir the mixture with a fork to loosen crystals; the goal is to evenly mix the crystals in the liquid. break up any large clumps. place the pan back in the freezer and repeat the above step about every 20 minutes until the consistency is that of crushed ice (usually about 2 hours, depending on the freezer). serve immediately. this can also be stored in an airtight container in the freezer.