...bake them in the oven (for freezing) or....
...fry them for immediate eating.
Form flat dumplings and either....
Roll into small dumplings. They now go directly into the freezer.
Graukas (from Austria), Parsley+Onions and dried bread (and som eggs)
Add some egg and mix.
You also need parsley and onions, and fine bread crumbs.
Heat until the marrow is liquid.
You need some bones with marrow in it.