Polaner Sugar Free Concord Grape Jam with fiber helps support a healthy digestive system. Bursting with real fruit and sweetened with Splenda brand sweetener, it's a good source of fiber and more delicious than ever. Polaner Sugar Free Concord Grape Jam with fiber: sugar free. 80 percent fewer calories than standard preservatives. A good source of fiber. Sweetened with Splenda brand. 10 calories per 1 tbsp. Gluten-free. Kosher.