Substitute for Fresh Cake Yeast

Use one half the amount if substituting with active dry yeast.

Use one third of the amount if substituting with instant yeast.

So for the recipe, use 1/2 tablespoon active dry.

http://www.thefreshloaf.com/handbook/commercial-yeast-0

Here's a handy chart for converting yeast measurements:

http://gaaarp.wordpress.com/2009/05/18/yeast-equivalents/

If the cake yeast amounts are given in ounces and you are trying to use teaspoons these are them amounts I have used and they have worked great.

1/2 ounce = 1-1/2 tsp. active dry yeast                                    

3/4 ounce = 2-1/4 tsp. active dry yeast  or one envelope

I usually use the same amount of instant yeast as active dry and have had no problems.

Terry

25 g fresh yeast = 7 grams instant yeast

I use that to set up an equation  7  /  25  =  x  /  (weight of fresh yeast)