My homemade thousand island dressing has 0.1g net carbs per serving, and it tastes like the diner version I grew up on. Sweet, tangy, creamy, and ready in about five minutes.
The secret is the minced dill pickle. Most homemade versions skip it and just use relish or leave it out entirely. That’s a mistake. The dill pickle is what gives this dressing that sharp, briny bite that separates it from a slightly sweet mayo. I use Claussen pickles, finely minced, and the difference is real.
What surprised me when I first calculated the macros is how low this comes in. 0.1g net carbs per serving. Most store-bought thousand island dressings run 3 to 5 grams per two tablespoons because of added sugar. Even other homemade keto versions land around 0.6 to 1g. Mine stays at 0.1g because the ketchup is sugar free and the sweetener is a small amount. I use half a cup of mayo instead of a full cup, and the flavor doesn’t suffer for it.
I make mine with keto avocado mayo most of the time, but regular mayo works too. The sugar-free ketchup is the other piece people doubt until they try it. Multiple readers have told me they expected it to ruin the dressing, and every one of them came back saying it worked.
Here’s something I figured out by accident: this tastes better the next day. The Swerve takes a while to fully dissolve into the mayo, and the pickle and onion flavors mellow overnight. I try to make it the night before when I remember to. If you’re making it day-of, it’s still good, but the overnight version is noticeably smoother.
This is also basically Big Mac sauce with one less ingredient. Add a small splash of yellow mustard and you’re there. I use it on smash burgers, iceberg wedge salads, and as a dip for raw veggies when I want something with more flavor than ranch.
Regular ketchup has around 5 g of carbs per tablespoon, so this recipe calls for a sugar free one. My favorite is Primal Kitchen. It is made with real ingredients and has 1 g of carbs per serving.
If you can’t find sugar free ketchup, substitute 2 teaspoons of tomato paste or 1 tablespoon of tomato sauce.
How to Make a Thicker Dressing
Want a thicker dressing? Push a hard boiled egg through a fine mesh sieve, or break it down in a food processor, and mix it into the dressing. You get a thick and creamy result without adding flour or any other thickener. The egg adds a little extra flavor too.
Nutrition is an estimate calculated from the ingredients listed. Brands vary, so check labels if you track closely.
Frequently Asked Questions
Is thousand island dressing keto?
Store-bought usually isn't. Most brands have 3 to 5 grams of carbs per two tablespoons because of added sugar. My homemade version comes in at 0.1g net carbs per serving because I use sugar-free ketchup and a small amount of sweetener. I've compared it to every major brand label I could find, and this is the lowest I've seen.
Is this the same as Big Mac sauce?
It's very close. I've made both side by side, and the only real difference is a splash of yellow mustard in Big Mac sauce. Add about half a teaspoon of mustard to this recipe and you're there. I use it interchangeably.
Should I use powdered or granular sweetener?
I recommend powdered. Granular Swerve doesn't fully dissolve in cold mayo right away. I've noticed it can leave a slightly gritty texture if you eat it the same day. Powdered erythritol or a powdered allulose blend dissolves almost immediately. If you only have granular, make it the night before and it'll smooth out by morning.
Does this taste better the next day?
It does. I make mine the night before when I can. The pickle and onion flavors mellow out, and the sweetener fully dissolves into the mayo overnight. It's good right after mixing, but the overnight version is noticeably smoother. A reader's husband actually noticed the difference without being told.
Can I use sweet relish instead of dill pickle?
I'd stick with dill pickle. Most sweet relish has added sugar, and even the sugar-free versions have a softer flavor that doesn't hit the same way. The dill pickle gives it that sharp, briny edge that makes it taste like the real thing. I mince mine from whole Claussen pickles, but any dill pickle works.
How long does this keep in the fridge?
I get about a week out of mine stored in a mason jar. It stays good the whole time since it's mostly mayo and vinegar. I give it a quick stir before using since the pickle and onion bits can settle to the bottom.
Can I use a different type of mayonnaise?
I've made this with regular mayo, avocado mayo, and vegan mayo. They all work. Avocado mayo gives it a slightly lighter flavor that I prefer, but regular Hellmann's is what I grew up using and it's just as good. Just check the label for added sugar.
How can I make this dressing spicier?
I add a small dash of hot sauce when I want some heat. Cholula or Frank's both work without adding carbs. Start with a quarter teaspoon and taste from there. I've also tried a pinch of cayenne, which gives a background warmth without changing the flavor much.
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Just got a mini food processor and want to use it for everything. Can I throw all the ingredients in instead of mincing the pickle and onion by hand, or will it get too runny?
Pulse it twice and stop. The pickle turns to mush fast and releases liquid if you overdo it, which makes the dressing watery. With that small an amount I usually just grab a knife, takes 20 seconds.
I use my mini food processor for pretty much every chopping task and I’m tempted to just blitz the pickle and onion instead of hand mincing. The texture though. Part of what I love about thousand island is that chunky pickle bite, so does pulsing make it too smooth? Or does the final mix still have enough?
My daughter has an egg allergy so we use vegan mayo for everything at home. I’ve been using Just Mayo and it holds up fine for salads and stuff, but I’ve never made a dressing where it’s also got vinegar and pickle brine in the mix. Does it stay creamy or does it separate once the acid gets in there? The sweetener has me second-guessing too, since Just Mayo already runs a little sweet compared to regular mayo. Not sure whether to cut the Swerve or just follow the recipe as written. She’s been asking for thousand island since we went keto and I really want to get this right.
Vegan mayo holds up fine here. It’s only a tablespoon of vinegar going into a half cup of mayo, so the acid never gets high enough to split it. I’d cut the Swerve to half a teaspoon and taste from there since Just Mayo already runs sweet.
Double the batch if you’re taking it anywhere. Brought a jar to a cookout last weekend and three people asked what brand it was before I even poured it over the salad. Ended up as a veggie dip. Five minutes, half a cup of mayo.
Three people asked what brand it is before you even poured it. That’s the goal. I brought it to a potluck last summer and watched someone flip the jar looking for a label. The veggie dip pivot happens almost every time, cucumbers and bell pepper strips hold the dressing better than lettuce anyway. Want it thicker for dipping? Cut the vinegar to half a teaspoon. Holds up cleaner on a plate.
The texture is the whole thing here. Relish is pre-ground, so you lose that little burst of briny crunch. I mince the dill pickle fine but not paste-fine, and that contrast is what makes it feel like diner thousand island instead of just mayo with flavor in it, If you’re sticking with relish, chop a couple actual pickle chips into it and you’ll get closer.
The dill pickle is what does it. My mom used to make thousand island from scratch when I was a kid, always with those little minced pickles stirred into the mayo, and I haven’t tasted anything close to that since going keto three years ago. Made a batch of this Saturday for burgers and just stood there a second after I tasted it off the spoon. That tangy-sweet balance is exactly right. Four stars only because I bumped the Swerve up to a full teaspoon and a half (my mom’s version always ran sweeter), but that’s a personal thing, not a recipe thing. Five minutes, ingredients I already keep on hand. Almost unfair how good it is.
I’ve tried a few homemade thousand island recipes over the years and they always end up tasting like ketchup-flavored mayo, so I wasn’t expecting much. Made this last night for burgers and the dill pickle and vinegar actually do something together that the bottled versions never quite get right. The 0.1g net carbs made me look twice at the nutrition. I already put it on my lunch salad this morning.
I’ve tried at least four keto thousand island recipes and every single one tasted like watered-down mayo with a spoonful of relish. The vinegar in this one actually cuts through the fat and gives it that tangy bite the diner version has. Nothing else comes close.
I’ve made at least four or five different keto thousand island recipes over the years and the thing they all had in common was tasting like diet food. This one doesn’t. The minced dill pickle is what does it, that texture and brine you actually get at a diner. I use it on burgers now and I stopped looking for anything else.
Every keto thousand island I’ve bought has tasted like someone described the real thing over the phone, but the dill pickle in this actually gets it right.
Thousand island used to be on everything in my house before I went keto, and giving it up was honestly one of the harder parts. Made this on a whim with some avocado mayo I had in the fridge and the first bite kind of stopped me. It tastes like the real version, not a sad substitute. The pickle and vinegar nail that tangy balance, and I ended up putting it on a salad, a burger, and one very shameless spoonful straight from the bowl. Thank you for this one.
Spoon straight from the bowl is the highest compliment. The pickle and vinegar together are what make this one actually taste right instead of just taste close.
Let it sit overnight and the pickle brine and onion completely transform the mayo base into something that makes the 5-minute version taste like a rough draft.
Rough draft is accurate. The brine needs time to actually get into the mayo, and the onion softens enough that it’s not sharp anymore. I always plan to make it the night before and then forget.
I didn’t think I could pull off a homemade dressing without the real stuff, but the sugar free ketchup and that bit of dill pickle just… work. Made it for burger night and forgot I was on keto for a solid minute.
Made a batch yesterday and it was good right away, but my husband swore it tasted better after a night in the fridge. Is that the pickle and onion flavors melding, or does the Swerve need time to dissolve? Might just make it a day ahead from now on.
Both, honestly. Swerve takes a while to fully dissolve in the mayo, and the pickle and onion mellow out overnight. I make mine the night before when I remember to.
