Wash cranberries, place in pan with the 1 and 1/2 cups of water. Bring to a boil (high heat) reduce heat to low and simmer for 5 minutes. Then add sugar, salt and cook uncovered for another 5 minutes on low heat. Soften the gelatin in 3/4 cup of hot water, put into the cranberries, add celery and nuts and pour into mold or a bowl. Place covered in refrigerator to set as you would jello. Is a good idea to stir once in a while to keep nuts and celery from staying on the bottom. However if you are placing it in a mold to invert when done, it may be appealing for them to all be on top. It's your choice, so have fun.