How to pour YPD Agar plates: This tutorial shows you how we make and pour 400ml of YPD Agar. http://www.singerinstruments.com/index.php?option=com_content&task=view&... Ingredients: 4g Yeast Extract 8g Bacterial Peptone 8g Glucose 6.4g Agar 400ml Water Antibiotic (varies depending on use)