Put the water, sugar and lemon juice in a medium pot over medium heat and stir until sugar is completely dissolved. Bring the syrup to boil and then reduce to heat to a medium simmer. Cook without stirring for about 15 to 20 m titl it has reached 240F using a candy thermometer. (Alternatively you can use the Soft Roll method to test- see the blog post for the link for testing sugar syrups.)
Feel free to replace the strawberry rhubarb juice with pomegranate (not molasses) or orange juice.
If you find that your cubes weep a bit and the icing sugar coating disappears, do a second coating after 8 hours. Then serve.
Store in a container that has some ventilation, or line with paper liners. Store at room temperature.
This recipe is a riff on the Pomegranate Lokum found on the Ischta blog.