Short on time? Make the strawberry rhubarb mixture (step 4) up to 2 days ahead of time. Store covered in refrigerator until ready to use.
Rhubarb and strawberries are a refreshing pair for spring. To prepare fresh rhubarb, trim the ends and discard all traces of the leaves (rhubarb leaves are poisonous). Scrub the stalks and cut into pieces about 1 inch in length.