Why? Because you can! And pickle, and jam, or otherwise celebrate the resurgence of the domestic arts our forebears held so dear. Put on your best apron and step into our kitchen, won't you?
The swap of the blackberry for the tomato completely transforms this ketchup. There's still the expected kick from vinegar and the traditional punch of the spice blend, but the blackberry lends it an almost jammy, even slightly sour quality.