This is a copycat of the sauce made famous at a certain roast beef sandwich chain, and it genuinely holds its own. Keto horsey sauce comes together in one bowl with just three ingredients.
This post may contain affiliate link(s). As an Amazon Associate, I earn from qualifying purchases. See Disclosure.
Use creamed horseradish here, not the grainy, pure grated kind. Roast beef is the classic pairing, though it works well with grilled chicken, pork, shrimp, or a plate of raw veggies too.
This post contains affiliate links. As an Amazon Associate, I earn commissions from qualifying purchases. For more information, see my Privacy Policy.
Jump-start your keto success! Grab a copy of my 4-week Easy Keto Menu Plan or check out my other cookbooks to help you along.
Join our Facebook group for friendly keto support, and for videos on how to make these recipes, subscribe to my YouTube channel!
Chef Jenn’s Take on Horsey Sauce
Grabbing plain grated horseradish instead of creamed horseradish is the mistake to avoid, they are genuinely different products. Creamed horseradish has a few additional ingredients that temper the spice and smooth out the texture, while straight grated horseradish stays sharper and grittier.
Some creamed horseradish brands include a marginal amount of cornstarch or another thickener, though the carb count stays very low either way. If that matters to you, check the label and look for a version without it.
Adjust the tang with a tablespoon of cider vinegar if you want it, or bump up the heat with an extra teaspoon or two of horseradish. Chopped parsley or chives stirred in give it a nice herbal edge too.
One reader turned this into a seared salmon sauce by adding minced garlic, fresh dill, and a couple tablespoons of lemon juice, a genuinely good variation worth trying. On storage, when a reader asked how long this keeps, the honest answer was 4 to 5 days, maybe a bit longer with very fresh dairy, a touch more conservative than the week-plus other notes here suggest, worth reconciling.
What You’ll Love About Horsey Sauce
- A real copycat, tangy and spicy in equal measure.
- Just three ingredients, ready in about 5 minutes.
- Genuinely versatile, works on beef, pork, chicken, shrimp, and veggies alike.
Ingredients
- Mayonnaise – Your favorite keto-friendly brand.
- Sour cream – Full fat.
- Creamed horseradish – Not the grainy, pure grated kind. Check the label for the lowest carb count, and cornstarch-free if that matters to you.
- Salt and pepper – To taste.
How to Make Horsey Sauce
Scroll down for the full recipe card with exact measurements and printable instructions.
Combine the mayonnaise, sour cream, and creamed horseradish in a bowl Blend well and season with salt and pepper.
Make It A Meal
Roast beef is the classic pairing, try it with French Dip Chaffwich. It’s also excellent with Sous Vide Pork Loin. If you love building a sauce rotation, Ranch Dressing is another good one to keep on hand.
Storage
This does not freeze well, sour cream does not hold up in the freezer. Refrigerated, it keeps for about 4 to 5 days, maybe a bit longer if your dairy was very fresh to start.
Frequently Asked Questions
This recipe runs about 1 net carb per hefty 2 tablespoon serving. The number in the recipe card below will recalculate once this post is republished, so use it as an estimate until then.
Creamed horseradish has additional ingredients that temper the spice and smooth out the texture, while plain grated horseradish stays sharper and grittier.
About 4 to 5 days, maybe a bit longer if your dairy was very fresh when you made it.
If your sour cream is fresh, this sauce will keep for a week to 10 days in the fridge.
Add Preferred SourceKeto Horsey Sauce
Ingredients
- 1/4 cup mayonnaise
- 1/4 cup sour cream
- 2 tablespoons creamed horseradish
- tiny pinch of salt and pepper to taste
Instructions
- Blend all ingredients together and serve!
Nutrition
A Note on Nutritional Information
Nutritional information for this recipe is provided as a courtesy and is calculated based on available online ingredient information. It is only an approximate value. The accuracy of the nutritional information for any recipe on this site cannot be guaranteed. Erythritol carbs (sugar substitutes) are not included in the carbohydrate counts as they have been shown not to impact blood sugar, and they have zero calories and zero carbs. Net carbs are the total carbs minus fiber.
I love the tang in this sauce! A recipe that works well with so many meats is one to cherish! Thanks for sharing 😀
That sounds so flavorful! Made my mouth water. Will try this
I love this sauce and put it on everything! It’s super versatile and goes great with any protein. Thanks so much!
This sauce sounds incredible and I love that its keto too! Definitely need to make this.
Definitely going to make this! I can’t wait to try this!
Oh I do like horseradish. I didn’t know it was called horsey sauce when mixed with mayo. I’ll have to remember that.
I could use this sauce with so many dishes. Fantastic execution and just the way I like it!
Horsey sauce is my favorite! I used to always grab extras and keep them on hand for dipping fries 🙂 but not, I would love some of this on some beef or chicken.
Such a great sauce! I love horseradish, may and sour cream! Combining all three is an amazing idea. I had all the ingredients at home and made it quickly as a dipping sauce for the steak we had for dinner. So delicious!
Sauces with a hint of horseradish are the perfect amount of spice! I can see how this would pair nicely with many meat recipes.
I add minced garlic and fresh dill with 2 T of lemon juice for a delicious seared salmon sauce.
Sounds delicious!
This looks awesome! How long would it keep?
Hey Jonathon! It’ll keep for 4-5 days in the fridge, maybe a day or two longer if your dairy is super fresh! Enjoy, and thanks for stopping by! ~Jenn