Fresh czernina in Chicagoland

I was saddened to learn that Boniek's Deli on Foster and Harlem has closed. They had very good food, especially the sledze in vinegar (not oil!!) swojska and czernina. Does anyone know where fresh czernina is still prepared? I checked the places on Archer Ave. and struck out. I bought the czernina for two friends who are up in years, and I would like to continue to make their day every once in awhile.

Why did they close?..

Are you sure it's "czernina" and not czarnina?

czernina is the preferred spelling; czarnina is a dialectic variant, although it is widespread among the descendants of the old (late 19th/early-20th century) Polonia.

So, any info on where you can buy czernina in Chicago? I would like to know.... just in case...