I guess I am a little late with this post since strawberry season is over here, but I don't see why this recipe would not work with frozen (and then thawed) berries. We have been enjoying this syrup in endless glasses of lemonade, or with some simple syrup and club soda on ice. It is fairly potent and not too sweet. If you want it a bit thicker, just cook it for a little longer (but not too long or you will get jelly).
I just used my raspberry syrup recipe, subbing in crushed strawberries for the raspberries. It put the hot syrup in mason jars and sealed lots away for later.Speaking of raspberries, we have a ton here in the backyard.
And even some wild blueberries! We have had some awesome pancake breakfasts lately.
