Yellow mustard is real mustard.
1.1wasabi painted by Kawasaki in 828; 2. Wild wasabi; 3. How to make wasabi root and wasabi mud? I used to think foolishly and naively that mustard was made from a plant called mustard, just like Chili sauce. But I was wrong (my botany teacher, I am sorry for you). In fact, mustard is a powdery seasoning made by grinding the seeds of mature mustard (Brassica juncea) of Brassicaceae, which is generally yellow. It's the yellow paste with 3 yuan hot dogs sold by IKEA.
Green mustard is actually mustard. Now let's look at the mustard that puzzles me. Wasabi, haha, do you see anything from its Latin name? Yes, the green mustard in Japanese cuisine with sushi and sashimi is actually mustard sauce. Wasabi is a fine mud ground from the root of wasabi, which is not the same thing as mustard ground from mustard seeds, but has similar smell and taste. Wasabi belongs to the genus Wasabi in Cruciferae and is a close relative of Brassica mustard.
Mustard also has a cottage.
Knowing that this mustard sauce is not mustard sauce, I will tell you an unfortunate news: real horseradish is very expensive, and no sushi restaurant can give you two packs of free food and drink at will, so the sense of self-abuse you experience actually comes from another cruciferous plant-horseradish. Horseradish originated in Southeast Europe and West Asia, and is often used as a seasoning for roast beef and other dishes in European countries. Because it tastes similar to horseradish, it has become a material to imitate horseradish sauce. But it belongs neither to Brassica nor to horseradish, but to horseradish. You're right. It's horseradish.