I think there is a recipe for it in the recipes page. I just use 1 cup sugar to 1 cup water and bring to a boil. boil for several minutes till all sugar is disolved, then cool in the fridge. Add your extract or flavoring. Just brush it on your cake till the top is saturated, but don't soak the cake through. I just eyeball it, so I can't tell you an exact amount that you would use, sorry.
Everything you ever wanted to know about simple syrups:
(Recipes and different application techniques.)
http://forum.cakecentral.com/cake-decorating-ftopict-65643-.html
http://forum.cakecentral.com/cake-decorating-ftopict-55178-.html
HTH
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