I eat pancakes and crepes often, and like a variety of toppings, especially real maple syrup. However, I also like blueberry or other fruit toppings, but most of the time when I look at the label, they contain corn syrup, which I think just makes them flavored corn syrup.
So I bought a couple of those very small packages of blackberries the other day for a total of $4. Today I decided to make my own syrup, so I washed them and put them in a medium saucepan with about a 1/4 cup of water and 1.5 cups of sugar. I slowly brought it to a boil, stirring once in a while so it would not burn. Then I used my immersion blender and while the pan was still simmering, I ground the whole berries up a bit. (I think you could do this with a potato masher or even just a spoon once they get soft.) I let it bubble just a bit more and then covered it with a lid and let it cool.
After it was mostly cooled, I poured it into one of those pint sized Rubbermaid jugs with the pouring spout and lids and will keep it in the refrigerator. It made a full pint and was delicious! And no corn syrup! I think you could do this with any other kind of berry. I am going to put it over pancakes and maybe even ice cream. Total cost was $4 plus maybe 75 cents worth of sugar? It does have seeds, so that might be a problem for some people, but it tastes much fresher than the stuff you buy in the store. Probably freezable also.
Tip: Don't wear a white shirt while doing this. The blender spattered juice all over my shirt, and that took half an hour plus two doses of stain remover to get it all out.