No problems here
I don't see anything wrong with this product either. I've rated it just 4 stars only because the lid has somehow 'burnt through' leaving the contents exposed to the air. I can't find a BBE date, but I have had it for some time as it's not something I use much of or very frequently, so the additives don't give me much cause for concern. There are many processed products that most of us consume on a daily basis that are far more harmful.
5% is perfectly normal
Other reviewer does not know what they are talking about. Pure wasabi is extremely expensive due to the difficulty in cultivating it. The only time you would see pure wasabi is in a very high-end restaurant where it would be made fresh. This wasabi is perfectly good and pretty much the same as you'd get anywhere, even in a normal restaurant.
Wow, check out the ingredients - only 5% wasabi! Full of additives and artificial sweetners. Please stock authentic Wasabi Tesco, this is a dupe.