I recently tried to make jelly-topped cookies (specific recipe was from home, but here's an example recipe) using an assortment of flavors, including maple syrup, homemade sumac syrup, homemade elderflower syrup, vanilla flavoring, and a pandan flavoring that I bought at my local Asian market. I thought I could just make a dent in the cookies and fill them directly with the flavorings; I was wrong. I sort of expected the liquids to cook off (which happened), but I thought they would at least leave flavor residues behind (that did not happen).

My goal is to be able to make small amounts of a bunch of different flavors and then use them to bake a single batch of cookies with a diversity of different jelly toppings. I already make homemade syrups for pancakes and marinades and the like; I'm not going to go through all the effort of making and storing dozens of different types of jellies too, not for just the occasional baking day.

So what is it about jelly that makes the flavors last better through the baking process? What would I have to do to a liquid flavoring to make it last through the baking process? If I made a paste out of flour and liquid flavoring, would that hold the flavor? Is gelatin important/useful in order to retain moisture? Any and all help appreciated!

  • What do you mean by "jelly"? Thumbprint cookies are generally made with jam or preserves because it has more structure (fruit solids).
    – Catija
    Apr 19, 2017 at 1:36
  • Does it really have to be jelly? Or would it work to have something like frosting or glaze or caramel flavored with your syrups?
    – Cascabel
    Apr 19, 2017 at 1:44
  • Why not add your jelly afterwards - you could use guar gum to thicken/stabilize the syrup. Apr 19, 2017 at 5:47
  • Just an idea to try: freeze the fillings as cold as you can before adding them to the room temperature pastry.... Apr 19, 2017 at 15:44
  • @Catija: I grew up using the word jelly to refer to any jam that'd had the seeds strained out, irrespective of the degree to which other fruit solids got into the mix.
    – Jacob Stai
    May 10, 2017 at 21:41

1 Answer 1


Fruit preserves have a lot going on. They have a lot of sugar and pectin and sometimes fiber from the fruit. They have already been boiled for a while and the fruit flavors that are left are there to stay.

Liquid flavorings are mostly alcohol with volatile flavoring compounds. They are added late to a recipe because they boil off easily- at a lower temperature than water boiling.

I don't know of a way to prepare liquid flavoring so that it will be less volatile. I can't think of a time that I've seen that done. Perhaps if you mixed it into another jelly that would buffer the heat during baking. Perhaps an apple jelly with your flavoring mixed in. I suspect most of the flavor would still boil out unless you added the jelly right at the end of baking.

I think you would have more success with making a topping that you can add after the cookies are baked. It would be a different texture without the candied edges but it would still be good. Pectin NH glazes are used commercially for this kind of thing.

  • The OP's liquid flavorings are syrups, so probably sugar, water, and some flavorings. Not quite as volatile, but everything you said still applies - most of it will cook off or soak in.
    – Cascabel
    Apr 19, 2017 at 21:27
  • "They have already been boiled for a while and the fruit flavors that are left are there to stay." True, but the key part of my question is why that happens. Thanks for the alternative recommendations, though, I might try the apple jelly idea.
    – Jacob Stai
    May 10, 2017 at 21:39

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