Wasabi, the delicious sushi topping one may spot in supermarkets and restaurants, is likely white horseradish that's been dyed green. The researcher who spoke with the Washington Post said that ...

Then process about 1 to 2 cups of horseradish at a time using white vinegar for liquid. You want a fairly smooth sauce but not pureed horseradish. Drain vinegar from the processed root and use ...