One 1/4-ounce packet of active dry yeast is equal in activity to one 0.6-ounce cake of yeast. A 1/4-ounce packet of active dry yeast contains approximately 2 1/2 teaspoons; the measurement will not be exact as yeast is packaged according to weight rather than volume. A packet of yeast is sufficient to raise 4 cups, approximately 1-pound, of flour. Source: Red Star Yeast

EUROPEAN MEASUREMENT FOR 1 PKG DRY YEAST
Board: Cooking Club at Recipelink.com
From: Kirsten, Ontario, Canada 4-7-2002

1 pkg of dry yeast is equal to 50 gr. yeast cake. I often buy yeast cakes when I travel to Europe as I still like to bake with cake. However you will be successful in converting to dry package.

In reply to:

Hello..thank you for having time to read my question..To the moderator and to the members.does anybody know the measurement of the exact yeast you should put in the krispy kreme dounuts?Because the ingredients you placed in the recipe only says 2 pack yeast.And here in the philippines.We have different sorts of packs.like 1000 kilograms , 500 kilograms,etc.please help me.thank you. Thank you :)
jay pascual