Master making your own mustard with this ridiculously easy recipe then feel free to experiment with a range of seeds, vinegars, herbs and spices!
Slightly grind the mustard seeds for a few seconds in a spice grinder or with a pestle and mortar. (You want them mostly whole because you are using mustard powder, too).
Pour the semi-ground seeds into a bowl, add the salt and mustard powder and if using, add one of the optional ingredients, too.
Pour in the water or beer, then stir well. When everything is incorporated, let sit for up to 10 minutes. The longer you let it sit, the mellower the mustard will be. When you’re ready, pour in the vinegar.
Scoop the mustard into a glass jar and store in the fridge. It will begin to thicken up overnight. Wait at least 12 hours before using.