Authentic Wasabi Root

Has anyone a tip on whether real wasabi can be purchased anywhere in Taipei? Not the common substitute, which is a mixture of horseradish, mustard, starch and green food coloring, but the actual root to be grated upon serving. Thank you!

I’ve seen it at City Super and/or Breeze Center, but I’m not sure if it’s regularly stocked.

a lot of sushi restaurants have it on offer. maybe they will sell you some.