Hellodali wrote:Speaking of instant yeast, how long does it last kept in the freezer (which is where I remember Cook's Illustrated telling me to keep it).
I keep it about 6 months in the fridge. It keeps better in the freezer - maybe 12-18 months. The expiration date on the package is usually two years after it was packaged, but since it is so cheap I tend to replace my old yeast faster than that.
Make sure you bring it to room temperature before using.