This simple rhubarb jam recipe uses just three ingredients to create a bright, tangy, and slightly sweet preserve that’s perfect for spreading on toast or topping desserts. The use of strawberry gelatin enhances both color and flavor, giving the jam a delightful twist without the need for pectin. Often prepared in the spring or early summer when rhubarb is abundant, this refrigerator jam is cherished for its ease and satisfying, old-fashioned taste.