Double yolk eggs can be found at most retail locations, but not on a regular basis. Ask your local grocery store manager about their egg delivery schedule.
Hens are more likely to lay double yolk eggs later in their laying cycle, and these eggs are typically labeled as extra large or jumbo. Canadian labeling standards require that cartons labeled as double yolk contain at least 50% eggs with two yolks.
Learn more about double yolk eggs from Ontario egg farmer Cindy.