Homemade Whole Grain Mustard Recipe
Soaking the mustard seeds in vinegar, wine, and water for a full day or two softens them enough to grind without turning bitter, and a few days in the fridge afterward mellows the raw sharpness into a rounded, tangy heat.
- Prep
- 15 min
- Cook
- 0 min
- Total
- 1455 min
- Servings
- 24
Ingredients
- 1/3 cup yellow mustard seeds
- 1/3 cup brown mustard seeds
- 3/4 cup apple cider vinegar
- 1/4 cup dry white wine
- 1/4 cup water
- 2 tbsp honey
- 1 1/2 tsp fine salt
- 1/4 tsp ground turmeric (optional, for color)
Nutrition per serving
- Calories
- 34
- Protein
- 1g
- Carbs
- 3g
- Fat
- 2g
Based on the recipe as written, one serving. Recalculates if you swap an ingredient above. An estimate only, exact values depend on the specific ingredients used.
Need different units or a different yield? Try our Conversion Calculator →
Instructions
- 1Combine the yellow and brown mustard seeds in a clean, non-reactive glass jar or bowl.
- 2Pour the apple cider vinegar, dry white wine, and water over the seeds and stir well so every seed is submerged.
- 3Cover loosely and let the mixture soak at room temperature for 24 to 48 hours, stirring once or twice a day, until the seeds have plumped up and softened and most of the liquid has been absorbed.
- 4Transfer the soaked seed mixture to a food processor or blender. Add the honey, salt, and turmeric if using.
- 5Pulse to the texture you want: a few short pulses leaves a coarse, mostly whole-seed mustard, while 45 to 60 seconds of processing gives a thicker, more spreadable mustard with some seeds still intact.
- 6Scrape the mustard into a clean jar, press a piece of plastic wrap or a lid directly onto the surface, and refrigerate for at least 3 days before tasting.
- 7Stir before each use. The mustard will continue to thicken slightly and mellow in flavor over the first couple of weeks in the fridge.
Tips & variations
- Swap the dry white wine for a brown ale or stout for a deeper, maltier mustard closer to a beer mustard.
- Replace the honey with maple syrup or brown sugar for a slightly different sweetness profile.
- Add 1 to 2 minced garlic cloves or a teaspoon of grated fresh horseradish during blending for extra bite.
- Use all yellow mustard seeds for a milder, more traditional deli-style mustard, or all brown seeds for a noticeably hotter, more pungent one.
Storage & reheating
Store the finished mustard in a sealed jar in the refrigerator for up to 3 months. No reheating is needed or advisable, heat actually dulls the mustard's sharpness. Avoid freezing, since the seeds and liquid tend to separate once thawed.
Tips from the Tulo kitchen
- Use a glass or ceramic bowl for soaking, not aluminum, since the acidic vinegar can react with reactive metals and give the mustard a metallic taste.
- If the mustard tastes too sharp straight out of the blender, don't add more sweetener to compensate, just give it the full 3-day rest first; it mellows more than expected.
FAQ
Why does homemade mustard taste so bitter right after blending?
Freshly crushed mustard seeds release compounds that taste harsh and bitter until the vinegar has time to mellow them, which is why the mustard needs at least 3 days in the fridge before it tastes balanced.
Can I use only one type of mustard seed?
Yes. Yellow seeds alone give a milder, more familiar mustard flavor, while brown or black seeds alone produce a noticeably hotter, more assertive mustard.
How long does homemade whole grain mustard last?
Refrigerated in a sealed jar, it keeps well for up to 3 months. The vinegar and salt content help preserve it, but flavor is best within the first month.
Why is my mustard too thick or too thin?
Thickness depends on how long you blend and how much liquid the seeds absorbed during soaking; stir in a teaspoon of water or vinegar at a time if it's too thick, or blend longer if it's too loose.
Can I skip the wine?
Yes, substitute an equal amount of extra vinegar or water, though the wine adds a subtle depth that plain vinegar alone won't replicate.