How meny items are in a one baker's dozen?

There are thirteen.

There are 13 items in a baker's dozen.

14

There are 13 items in a baker's dozen; there are 12 items in a standard dozen.

13 of every items because if one of the bakers items are burnt or bake wrong they have one extraA baker's dozen contains 13 items. It originated as a practice among bakers in 13th century England,...