Make this recipe a recipe that people in that category can eat. categories: ['low_calorie'], recipe: in a large heavy saucepan combine the ingredients of part 1. bring to a boil and stir to dissolve sugar. add the ingredients of part 2. bring back to a boil, reduce heat and simmer until thick, stirring often, about 1-1 1/2 hours . ladle into clean hot jars leaving 1/2 inch head space and process in a boiling water bath canner for 10 minutes.

Target recipe: combine first 8 ingredients in a large saucepan. bring to simmer over low heat until sugar dissolves. add rhubarb, onions and raisins, raise heat to medium, cook until rhubarb is tender and mixture thickens, about 10 minutes, remove from heat and cool.