This product contains a toxic substance which is banned in most countries outside the US. Reviewer regards this as a dangerous product. Read full review here.
The scientists with their fancy equipment and reports to definitively state if Wasabi powder actually contains Wasabia japonica or not. The only people who know if a certain Wasabi powder contains Wasabia japonica or not are the growers and processors who actually make the product. In the end, It comes down to the end user being satisfied with the product they are using and does it suit their purpose.
Some basic information about Wasabia japonica.
This is one of the FAKE wasabi powders available. It also contains dangerous ingredients that are likely to affect people suffering from allergies and children. There also appears to be undisclosed ingredients in this product.
This is the definitive method of making the best Wasabi paste from powder using simple instruction and a video to make it easy. The quality of the final product depends on the quality of the Wasabi powder you are using – not the method.