PRODUCT DESCRIPTION INSTRUCTIONS: Dissolve the yeast in warm water and wait for 15 minutes to activate. 20 Grams of dry yeast for 1 kilogram of flour is recommended. Baker's yeast is the common name for the strains of yeast commonly used as a leavening agent in baking bread and bakery products, where it converts the fermentable sugars present in the dough into carbon dioxide and ethanol. Baker's yeast is of the species Saccharomyces cerevisiae which is the same species (but a different strain) commonly used in alcoholic fermentation, which is called brewer's yeast. Baker's yeast is also a single-cell microorganism found on and around the human body. Active dry yeast is the form of yeast most commonly available to noncommercial bakers. It consists of coarse oblong granules of yeast, with live yeast cells encapsulated in a thick jacket of dry, dead cells with some growth medium. Active dry yeast must first be proofed or rehydrated. It can be stored at room temperature for a year, or frozen for more than a decade, which means that it has better keeping qualities than other forms, but it is generally considered more sensitive than other forms to thermal shock when actually used in recipes. SHIPPING POLICY (Please Read) - Your package will be shipped via PTT - Turkish Post Economy International Mail WITHOUT tracking number. - Packages are normally delivered in 20 - 30 days period. But rarely this duration might be up to 50-55 days. Unfortunately "Economy International Shipping" delivery times may be very unpredictable. Sometimes customs may be very busy. So delays may occur. - If you prefer Registered Air Mail with Tracking Number, please contact us with your country information.