Tomato and Basil Jam with Sherry Vinegar

There’s almost nothing more appealing than a toasted and buttered english muffin spread with the herbal sweet-tart goodness of tomato and basil jam. Except that there is: a toasted and cream-cheesed English muffin with tomato and basil jam.

This version of the old Ball Blue Book standby is intensely tomato-flavored because no commercial pectin is used, but is nevertheless just similar enough to the Ball jam—the one I remember from my childhood—that those who remember it fondl