1Heat sugar and water to boiling in 3-quart saucepan, stirring constantly. Stir in rhubarb. Boil gently about 15 minutes, stirring frequently, until thickened. Stir in strawberries, walnuts and raisins. Heat to boiling; boil gently 5 minutes. Quickly skim off foam.
2Immediately pour into hot, sterilized jars, leaving 1/4-inch headspace. Wipe rims of jars; seal. Cool on rack 1 hour. Store in refrigerator up to 2 months.