Does Simple Syrup Make Cake Soggy. When do you put simple syrup on cake? Instead, think of the syrup as a light glaze that thinly veils the cake. If you’re concerned about this happening, then make sure you’re only adding a thin layer of syrup, and check your first cake layer to make sure the syrup is soaking in fully before you add your icing and continuing to layer up your cake. If you don’t have a pastry brush, you could also use the folded corner of a paper towel.





