Sauces

Mustard with Fried Onions

by Editorial Staff

Summary

Prep Time 30 mins
Total Time 30 mins
Course Sauce
Cuisine European
Servings (Default: 1)

Ingredients

  • 100 g mustard seeds
  • 1 tablespoon sugar
  • 1 teaspoon salt
  • 1 teaspoon vinegar - essence
  • Pepper, roughly crushed black
  • 1 small onion (s)
Mustard with Fried Onions
Mustard with Fried Onions

Instructions

  1. Grind the mustard seeds in a moulinette or coffee grinder as finely as possible. You should be careful that the flour does not get too warm, otherwise the mustard will become bitter. If you want a fine mustard, sift out the flour and process it further. Personally, I am also quite fond of coarse mustard and use mustard flour as it is.
  2. Add sugar and salt and stir. Then add the vinegar and continue stirring vigorously. If you want, you can also use white balsamic vinegar, but you need more of it because it has less acidity. It will make the mustard sweeter. If necessary, be careful with the sugar. Then cold water is added. If you don`t like it so spicy, you can use hot water. The amount of water is as much as you feel, until it becomes a slightly watery paste. Don`t worry, the mustard flour is still swelling.
  3. Now peel the onion and chop it finely, I prefer the moulinette for something like that. Fry the onions until they are crispy brown and then degrease them on kitchen paper. Then stir into the mustard. Season to taste with salt, sugar, vinegar and black pepper. If necessary, add a little more water, you can also dilute the mustard with a little water after a few days, it will become a little thicker.
  4. In terms of spiciness, I found that the longer the mustard stands, the milder it becomes.
  5. The quantities given are sufficient for 200 - 250 ml.
Editorial Staff

About Editorial Staff

The Boss Kitchen editorial staff oversees content review, fact-checking, and recipe verification across the site. Published articles pass through the editorial team before going live, ensuring ingredient lists, techniques, cooking times, and nutritional claims hold up in a home kitchen. The team coordinates contributions across the site writers, handles reader corrections, and maintains consistency in measurement conventions, safety guidance, and dietary labeling. Posts under this byline typically represent team-reviewed reference material, site announcements, or editorial roundups rather than individual-author features, and they are held to the same sourcing standards as bylined recipe and product coverage.

Get FREE Recipe Gifts now. Or latest free cooktops from our best collections.

Disable Ad block to get all the secrets. Once done, hit any button below