Commercial sherbet generally contains dairy as well as ingredients made from allergens such as corn and soy. This lemon ice has only 3 ingredients including sugar and water. If you're o.k. with citrus, this lemon ice is safe.
It is also intensely lemony and not overly sweet.4 cups sugar (See Sugar in the Glossary)
2 cups water
4 cups fresh squeezed lemon juice (See Juice in the Glossary)
Combine the sugar and water in a saucepan. Cook on medium high heat, stirring constantly, until the mixture boils and all the sugar is dissolved. Stir in the lemon juice. Refrigerate until chilled. Put the container for the ice cream into the freezer (so it won't melt any of the ice cream when you scoop it into the container).Freeze according to the directions for your ice cream maker. Immediately transfer the ice cream to its prechilled container and either serve it immediately or get it directly into the freezer to harden.
Garnish with fresh mint leaves if you like.