Place diced rhubarb and water in a deep saucepan. Cover and bring to a boil;turnheat down and simmer gently until rhubarb is very tender, about 10 minutes, stirring occasionally.
2
Remove from heat, add sweetener, and mix well. (The amount of artificial sweetener required is largely dependent upon the acidity or 'sour' taste of the rhubarb you use. Taste and adjust amount of sweetener accordingly.) Turn into a pint jar. Cover and store in refrigerator.