In a sauce pot, cook the water and raspberries over high heat.
When it begins to boil, reduce the heat to a simmer.Remove any foam, then boil the mixture for 20 minutes.
Turn off the heat after 20 minutes, then filter it using a fine mesh strainer.Add the sugar and boil the liquids once more.
Until all the sugar has dissolved, about 5 minutes, stir occasionally.Allow syrup to reach room temperature before bottling itIt can be preserved in the refrigerator for 6 to 8 weeks.