Baking powder

Yesterday my neighbor asked me if I had any baking powder—she wanted to make a coffee cake.  So I went to the kitchen cupboard and got out the Ziploc bag with flour, baking powder and baking soda.  I told her I thought it was several years old, and she should just use more.  After she made it and it cooled, she brought over four pieces and returned the can.

Today I needed to borrow a pizza pan, so I went over to her house, and she gave me a new can of baking powder so I could throw the old one out.  Which I did.  But first I removed the price sticker so I could see the use by date on the bottom of the can.  November 1996.