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- expiration date codes, and what they mean
Due to its moisture content, compressed yeast must be refrigerated. It remains fresh for up to five weeks. Dry yeast is made by removing over 90 per cent of the moisture from the yeast mass at a low temperature. It does not need to be refrigerated, and has a shelf life of six months. Both compressed and dry yeast are classed as active yeast because they are made up of living yeast. The yeast is in a dormant state when packaged but becomes active when combined with hot water or milk.
Yeast comes in different forms, liquid, crumbled, dry or pressed. Baker's yeast is the common name for the strains of yeast commonly used as a leavening agent in baking bread and bakery products.
* Active Yeast: Means the yeast is alive and active. It is found in different forms to satisfy bakers' requirements: fresh, but also dry or liquid. The drying process in its manufacture reduces moisture content, giving it a longer shelf life than cake yeast while retaining optimum activity. When activated, it provides ultimate baking activity in all yeast dough- low sugar to highly sweetened breads. In the case of dry yeast, dehydration is never pushed below 40°C in order to maintain its fermenting power!
* Deactivated Yeast: Means the yeast is dead, (or inactive, i.e. beyond 40°C). The yeast cream has been pasteurized and sterilized, so that the yeast is dead, with no leavening power, but leaving. The yeast keeps its vitamins and minerals properties behind but it cannot be used to make bread: it is an inactive yeast! Used in pizza and bread to increase the extensibility of a dough.
Other dating on food products is voluntary. Open dating uses calendar dates and closed, or coded, dating is a process used by manufacturers to help with managing inventory.
* Best If Used By: Is not a safety-related date, but instead is the recommended date for best flavor or quality. Even if the “best if used by” date has passed on a food you have at home, it should be safe if stored and handled properly.
* Use By: Usually refer to best quality and are not safety dates. Foods that have a use by date written on the packaging must not be eaten after the specified date. It’s the last date for peak quality. After this date, taste, texture and quality may go downhill, even if food safety does not. This is because such foods usually go bad quickly and may be injurious to health if spoiled. It is also important to follow storage instructions carefully for these foods (for example s raw meat, poultry, fish, eggs, milk, fruit and vegetables., specifying that the product must be refrigerated).