I remember these from when my grammy was still with us~! I bought an old Polish cookbook off ebay that had this recipe in it and I believe it is the same one. My mom just remembers that it was alot of work but worth it! Hope this helps...I noticed your post was a couple of years ago.

Chrust

4 egg yolks
1 egg white
1/4 cup powdered sugar
1/2 t. salt
1 t. vanilla
1 T. rum
1 cup flour

Add salt to eggs and beat for 10 minutes. Add sugar and flavoring and beat until well blended. Fold in the flour. Transfer to a well floured board and knead until the dough blisters. Cut in halves, roll very thin, and cut into strips about 4 inches long. Slit each piece in center and pull one end through the slit. Fry in hot fat until lightly browned. Drain on absorbent paper and sprinkle with powdered sugar.