How to Store Fresh Yeast

Storing Yeast in the Freezer

1. 
   Write the date on a package of fresh yeast. Take an unopened package of fresh yeast out of the refrigerator or plan on freezing the package as soon as you bring it home from the grocery store. Label the outside of the package with the date that you're putting it into the freezer.^[4]

   1. You don't need to repackage the unopened yeast since it's effectively wrapped to protect it from freezer burn.

   Tip: If you've already opened the yeast or you want to cut it into smaller portions, wrap each small portion in plastic wrap. Then, wrap them again in aluminum foil and place all of the portions into a sealable plastic bag. Write the date on the outside of the bag.

2. 
   Store the yeast in the freezer for up to 3 months. Check the date that you wrote on the package and plan to use it within 3 months of putting the yeast into the freezer. If your freezer is set to 0 °F (−18 °C) or below, you may be able to store the yeast for longer, but the yeast might not be as effective once you thaw it.^[5]
3. 
   Thaw frozen yeast in the refrigerator for 12 hours or overnight. It's important to gradually thaw the yeast so the temperature change doesn't shock the yeast. Transfer as much yeast as you need to the fridge night before you plan to use the yeast.^[6]

   1. You don't need to take the yeast out of its packaging to thaw it.
4. 
   Feel if the yeast is moist and ready to proof. Open the package of yeast and feel it before you use it in your recipe. If the yeast is still alive and ready to proof, it should feel moist and firm. Discard the yeast if it feels dry or crumbles when you touch it.^[7]

   1. Keep in mind that while you can use thawed yeast in recipes, it may not give your baked goods the same rise or volume as fresh yeast that's never been frozen.