How could a competitor benefit from using an honest quantity of real strawberries, if the only place they can effectively advertise that is in the tiny ingredients list that nobody reads?
"Filling made from 100% real strawberries!"
Already a common marketing construction, even. Apple juice is often sold with this bit of puffery.
Food labelling laws need an overhaul. And some serious teeth.
That statement says the strawberries are 100% real, it does nothing to exclude the addition of other ingredients or artificial red flavoring added elsewhere.
You may think I'm being asinine, but I'm not. I've been fooled by that language before.