Are you making a ham this holiday? If so, make this mustard sauce, too. It is so delicious and so simple to prepare — it’s a matter of bringing a few ingredients to a boil and then passing the mixture through a strainer. It’s fantastic for leftover ham sandwiches.

Gramma's mustard sauce in a Weck jar.

In my family, this mustard sauce is as essential as the ham on the holiday table. It takes no time to whisk together, and it is so nice to have on hand for leftover ham sandwiches. 

Serve it aside this baked ham with brown sugar glaze.

You can watch the video above, but here’s the visual play-by-play: Gather your ingredients: cream, ground mustard, vinegar, salt, sugar, egg yolks.

Ingredients for mustard sauce.

Combine them in a sauce pan:

Ingredients for mustard sauce in a small saucepan.

Bring to a simmer over medium heat, whisking often. Do not walk away. As soon as it simmers, it’s done. Strain it.

Mustard sauce simmering stovetop.
Mustard sauce, strained through a sieve.

Store in the refrigerator for up to 1 week (or longer).

Gramma's mustard sauce in a Weck jar.

It is sooooo nice to have on hand for leftover ham sandwiches on …

sandwich ingredients

… homemade biscuits.

leftover ham and arugula sandwich on cheddar biscuit with mustard sauce
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Gramma's mustard sauce in a Weck jar.

My Grandmother’s Mustard Sauce

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Description

In my family, this mustard sauce is as essential as the ham on the holiday table. It takes no time to whisk together, and it is so nice to have on hand for leftover ham sandwiches. 

Not all dry mustards are created equally, and depending on the type you use, your sauce could taste unpleasantly strong. I don’t have a strong preference of brands here, but in recent years I use the Tone’s ground mustard, which I find at my local co-op.

Ingredients

  • 1/2 cup (114 g) sugar
  • 1/4 cup  (70 g) white wine vinegar
  • 4 tablespoons (24 g) ground mustard, see notes above
  • 4 egg (60 g roughly) yolks
  • 1 teaspoon (4 g) kosher salt
  • 1 cup (240 g) heavy cream

Instructions

  1. Place a strainer over a medium-sized bowl (able to hold about 2 cups of liquid). Combine all ingredients in a saucepan. Bring to a simmer while monitoring closely and stirring often. As soon as the mixture comes to boil, pour it through the strainer into the bowl. Let cool, then cover with plastic wrap and place in the fridge.
  • Prep Time: 5 minutes
  • Cook Time: 5 minutes
  • Category: Condiment
  • Method: Stovetop
  • Cuisine: American