This week would be the 280th birthday of Johann Heinrich Lambert, who proved that
pie was an irrational craving pi was an irrational number. So far, nobody in history has been able to explain irrational cravings for pie! In the meantime, I thought I'd whet your craving (and test your identification skills) for different varieties of this heavenly pastry. Do you have an eye for pie? See if you can match the pie to its name to find out.