Gern destroyed

Large crowds prevailed everywhere I had put hung the dumplings. Even the tail tits came to visit.
However, and this is really annoying, just as long as no freezing temperatures prevailed. Now, in the winter, when cold and frost, where additional food for songbirds is particularly important, the dumplings are not affected.
I suppose they are too hard and I'm wondering if there might also dumplings, which you can feed in the winter?