Question:
Would you have an answer to this question? A number of my neighbors, including myself, have used Redwing crocks that predate WWII. Most of us ferment cabbage to produce sauerkraut. Because sauerkraut is acidic we began to wonder about its affect on the glazing and if it’s possible for the acid to leach lead out of the glazing? Did the old crocks have an internal glazing that contained lead? Is it dangerous to use these crocks to produce food that is acidic? Thank you. Respectfully, Eric Enberg Sr.

Answer: Eric, the acid in sauerkraut will not affect the glaze on Red Wing crocks. These are zinc glazes which were fired at 2300 degrees. There is no lead in these glazes and they are still safe to use to process food. Al Kohlman