Our Strawberry Rhubarb Conserve tastes like Grandma’s Strawberry Rhubarb pie filling in a jar! It is the perfect balance between sweet and tart and despite being a spring flavor combination, it is a year-round bestseller. This fruit spread is truly special. 9 oz. size. Strawberry Rhubarb Conserve is available year-round. A conserve is a fruit spread, similar to jam, but usually contains a mixture of fruits, and sometimes raisins or other dried fruits.