What does the Wife of Bath say she is an expert in?
She is an expert in the art of love. She has attracted and married five husbands (though all at the church door--since it is hinted that she was not a pure virgin when she married), and is probably on this pilgrimmage in search of husband number six. She is a woman of wealth and property, and tells the tale of a knight who rapes a young woman and is forced to search for a year and day to find out what women really want. The answer (delivered by an old woman, and approved of by the Queen and the ladies of court) is very telling of the worthy woman of Bath: women want to be treated as equals to their male counterparts.