1

Is yeast that is two years old and has never been opened be used

6

If I were you, I'd do a simple test that determines, how active (= alive) your yeast is.

When you supply yeast with ideal living conditions, you can observe the activity - or lack of - as the yeast bubbles and foams.

For a test, you sprinkle yeast in lukewarm water and check for activity. A detailed description can be found here, for example.

This should give you the answer whether your yeast is still useable or not.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.