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Fruit jam or jelly is a sweet, spreadable preserve made by cooking fruit or fruit juice with sugar and often pectin, a natural thickener. Originating in ancient civilizations as a way to preserve seasonal harvests, it's now a global pantry staple enjoyed on bread, pastries, and in desserts.
It is primarily a source of carbohydrates from natural fruit sugars and added sugar, with negligible fat or protein. A typical 1-tablespoon serving provides a quick energy boost and small amounts of vitamins like vitamin C, along with about 50 calories.
Culturally, jam-making traditions vary worldwide, from European marmalades to Middle Eastern fruit cheeses. Nutritionally, it's unique as a concentrated fruit product that retains some antioxidants and fiber, especially in less-processed varieties.