This was quite a fun read - especially the self-deprecating humor and the little vignettes about how and where the author sampled the different mustards - but I was pretty surprised by the narrow selection.
In various parts of Europe there's a strong tradition of very geographically-specific types of mustard - often differing greatly in texture, strength, color and taste in neighboring towns or regions.
Also mustards can be seasonal - here in Sweden there are many mustards that are only available at Christmas, for instance - not to mention that people make their own mustards (also usually based on regional preferences).
In various parts of Europe there's a strong tradition of very geographically-specific types of mustard - often differing greatly in texture, strength, color and taste in neighboring towns or regions.
Also mustards can be seasonal - here in Sweden there are many mustards that are only available at Christmas, for instance - not to mention that people make their own mustards (also usually based on regional preferences).