How Much is a Baker’s Dozen?

The answer is 13.

A baker’s dozen got it’s name from a law in 13th century England, where a baker could lose a hand if they were found to shortchange customers. To protect against this, bakers began to sell 13 loaves of bread for the price of 12 (since they were giving more for the same price, they could not be accused of shortchanging their customers). Hence the term “baker’s dozen.”