We can't always locate the ketchup in our house, but I did manage to find Henry Heinz in the 1900 census. H J Heinz and his oldest son are enumerated as pickle manufacturers. The "0" behind the occupation means something, but not how many pickles they made during the year. The column headings on the original indicate the intent.
If your ancestor was in a pickle in 1900, that may be shown when you search the 1900 Census.
Chances are you may find pickles in your refrigerator, but not your ancestor. And if your ancestor is in the refrigerator...well that's another problem entirely.