Mustard prices??

Can anyone make sense of the .50$/lb price drop in mustard over the last month? Did some country have a bumper crop? Is it speculation on increased acres next year? Projections of rain in dry areas for the future? A mix of the three seems like a shocking change being as last year there was an equal increase this time of year.
i know prices can be unpredictable but it seems like price fixing when there won’t be any more production over the next 6 months.
am I missing something?