I used 1.5 times the zest called for in the recipe. These have a poundcake like texture as opposed to say a blueberry muffin.
I subsituted whole egg for the egg whites because a little bit of yolk won't bother me and preferred them that way. I wouldn't do that unless you know it won't hurt you.
-------------------- Have a blessed day! Rachel
Formerly poochibelly...
I have IBS but it doesn't have me!