Does brewers yeast expire? When it comes to the shelf life of foods, there are so many things that can affect the length of time you should keep a food including yeast. Some foods have a very short shelf-life because they’re highly perishable and tend to go bad very quickly. Most commercially available dry beer and liquid beer yeast expire after a period of time. It thus takes 1 to 3 years for dry yeast to expire and 3 to 6 months for liquid yeast to expire if they are stored correctly. But there’s more to it! The time before … Continue reading Does Brewers Yeast Expire: Is Expired Brewer’s Yeast Poisonous?