To make strawberry milk, add 3 tablespoons of strawberry syrup for each 8-ounce glass of milk. Stir well to combine.
Add strawberries, granulated sugar, and water to a medium saucepan and bring to a boil over medium-low heat. Reduce heat and allow to simmer about 10 minutes. Remove from heat and pour into jar of a blender. Blend on high speed for 10 seconds or until smooth. Pour into a bowl, cover with plastic wrap, and refrigerate until chilled, about 20 minutes or overnight.