Mustard English and Sherry Red are not the same.
Sherry Red is a variant of mustard, they look and taste different, Sherry Red has thinner leaf stalks and narrower leaf surfaces, while mustard leaf stalks are thicker and the leaf surfaces are broader and thicker, the flavor of Sherry Red is spicier, while mustard is more bitter, both of them are used as pickles, Sherry Red has a better flavor, and Sherry Red is a more popular pickle compared to mustard. People often use Sherry to make pickles to eat, the flavor is excellent.