I left it to the last minute to go shopping for ingredients and sadly couldn't find any cherries. Undaunted I soldiered on substituting a mixture of strawberry flavoured gummy sweets and necco wafers.
And that actually worked really well! It wasn't what it was supposed to be but it certainly was good. A crunchy, medicine tasting bite every now and then fromt he necco wafers. Chewy bite every now and then fromt he gummy sweetss. And all in a really rich, fudgy exterior.
I undercooked them a bit and I think it was probably a good thing. They were chewy and rich and delicious. No airiness or crumbliness. Pure chocolately chew. Yum!