1949, Henry Garfield Alsberg,New England; The Middle Atlantic States, page 595:
Borscht &porzelchen are still served at New Year's.
1950,Minnesota Journal of Education, volume 31, page 45:
Most of the recipes were handed down from one generation to another by the Mennonite people of that area. Included are recipes of zwiebach,porzelchen, piroshki, schnetke, kielke and many others. Copies of the cookbook may be obtained[…]
