Mix this with water, tea, lemonade, etc., or drizzle on a cake or pancakes. Or, use it to make Rose Cakes. Scale this up or down depending on how many people you want to share it with. This will be clear unless you add a little food coloring; the color is useful if you want to help people distinguish it from other clear syrups like sekanjabin.

1 1/2 c. rose water (or 1 bottle)
1 1/2 c. water
3 c. sugar
1-2 drops red food coloring (optional)

Mix the ingredients in a saucepan and bring to a boil, stirring until the sugar is fully dissolved. Reduce the heat to low and continue to simmer, stirring occasionally, until it is about half the volume you started with. 

Let cool and pour into one wine-sized bottle for a crowd or multiple smaller bottles if you want to give it away as gifts. Keep in the refrigerator.