The best homemade burger sauce with ketchup and mayo
- Preparation 5 min
- Refrigeration 30 min
- Servings 4
- Freezing I do not suggest
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🍔 The burger sauce everybody has already made by accident
Ketchup and mayo in a bowl. Stir. That is where this recipe starts, and I am not going to pretend otherwise. Some people call it fry sauce, plenty of others just call it burger sauce, and here in Quebec we call it a trempette and set it beside a plate of raw vegetables. Same three seconds of work, four different names.
What I wanted was to take that everyday sauce and push it up a level. Spices, cheese, and all of a sudden a classic anybody can make turns into something worth writing down. Showing that a classic is easy to improve is the whole point of this page.
🧀 Parmesan and smoked paprika do the heavy lifting
Finely grated Parmesan is my own move. I have never seen anyone put cheese in a ketchup mayo sauce, and that is exactly why it works. The salt in the Parmesan reaches into the sweetness of the ketchup and gives the sauce a depth it simply does not have otherwise. Smoked paprika handles the rest, a quiet smokiness that sits in the background without any heat, plus a pinch of Italian seasoning for the herbs.
The ratio is equal parts, half mayo and half ketchup. Not because it is easier to remember. Because the sweet side is genuinely good that way, it is rounded, it is delicious. Most recipes cut the ketchup in half to tame the sugar. I go the other way and I stand behind it. There is no acid in here either. No vinegar, no pickle brine, nothing. This is a dipping sauce, not a dressing.
🥕 A veggie dip first, a burger sauce right after
The recipe makes about 150 ml, enough for a vegetable platter for four. Celery, carrots, peppers, cauliflower, it covers the whole tray. But do not stop there. It is excellent in a homemade burger, next to my Air Fryer French fries and on my beer-battered onion rings.
Five minutes and a whisk is all it takes. If you have my homemade mayonnaise in the fridge the sauce will be even better, but store-bought mayo does the job just fine.
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⚖️ The equal-parts ratio is a choice
Almost every recipe you will run into uses twice as much mayo as ketchup to keep the sugar down. I go half and half on purpose. The sweetness of the ketchup rounds the sauce off instead of throwing it out of balance. If you find it too sweet, pull back one spoonful of ketchup before you add anything else. That is the only adjustment that really changes the taste.
🧀 Grate the Parmesan fine, not in flakes
This is the detail that decides whether the sauce is silky or gritty. Finely grated Parmesan melts into the mayo and disappears, leaving only the salt behind. In flakes or shavings you will chew it, and the texture falls apart. A fine grater, two passes, done.
🧊 Half an hour in the fridge makes it better
It is good right away and you can serve it on the spot without apologizing. But give it thirty minutes to an hour in the cold and the smoked paprika and the Italian seasoning have time to spread through the mayo. The difference is not subtle. If you have the time, take it.
🚫 No acid in here, and that is deliberate
A lot of sauces like this one add vinegar, Worcestershire or pickle brine. Not this one. It is a dipping sauce, so it has to stay soft and creamy or it will bulldoze a raw vegetable. If you want something sharp and tangy instead, go see my homemade dill tartar sauce.
🥄 Store-bought mayo does the job
My homemade mayonnaise makes a richer, rounder sauce, no question. But if you open a jar from the store nobody around the platter is going to complain. Just use regular mayo, not light: the low-fat version weeps water and the sauce goes thin in the fridge.
📅 Make it ahead
Everything here can be done ahead, since nothing gets cooked. Grate your Parmesan, measure your spices, keep it all in small labelled containers. You can even mix the whole sauce a couple of days early if that suits your week. That said, if friends are coming over, make it the day before at the latest. That is when it is at its freshest, and it only costs you five minutes that morning.
❄️ Storing it
In an airtight container in the fridge, count on 5 to 7 days. Give it a stir before serving, it settles. Freezing is out: a mayo-based sauce breaks when it thaws and you end up with a grainy puddle you cannot save.
🍯 Variations, honestly
Honey, maple syrup, a touch of Dijon mustard. People look for those versions and I understand why. I have not tested them, so I am not going to tell you I make them. If you feel like trying, go half a spoon at a time and taste as you go, because the ketchup already brings plenty of sugar.
✅ What do I serve with my homemade burger sauce?
A vegetable platter is its home turf, but it really shines on anything fried. Serve it with my Air Fryer French fries, my fried chicken wings or my homemade chips. It is also perfect for dipping my homemade parmesan fondue, and if you put it in a homemade burger instead of your usual sauce, you will understand why there is always a jar of it in my fridge.
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Ingredients
- ¼ cup (60 ml) mayonnaise
- ¼ cup (60 ml) ketchup
- 1 tbsp (15 ml) finely grated Parmesan cheese
- 1 tsp (5 ml) smoked paprika
- ½ tsp (2.5 ml) Italian seasoning
- Salt and freshly ground pepper
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Preparation
- Place the ingredients in a bowl, season with salt and pepper and mix!
It depends entirely on where you are standing. In Utah it is fry sauce, popularized there in the 1940s. In the United Kingdom it is burger sauce. In France, sauce cocktail. In Argentina and Uruguay, salsa golf, said to have been invented in the 1920s at a golf club in Mar del Plata by Luis Federico Leloir, who later won a Nobel Prize. Puerto Rico calls it mayoketchup, Japan calls it aurora sauce and Germany calls it Rot Weiß. Here in Quebec we never bothered naming it, we just call it a trempette. Same starting point every time: mayonnaise, ketchup, and whatever the cook adds on top. Mine gets Parmesan and smoked paprika.
No, and the difference matters. Thousand Island is a salad dressing built on mayo and ketchup plus sweet pickle relish, and often chopped egg, onion and a splash of vinegar, which makes it chunky and tangy. Fry sauce, or this burger sauce, keeps only the creamy base and stays perfectly smooth. Mine goes further from Thousand Island still, since it has no acid at all and leans on Parmesan and smoked paprika instead of relish.
At its simplest, mayonnaise and ketchup. Mine adds finely grated Parmesan, smoked paprika, Italian seasoning, salt and pepper, in equal parts mayo and ketchup. No cooking, five minutes, roughly 150 ml. The Parmesan is what separates it from every other burger sauce recipe out there, and the smoked paprika does the job smoked bacon usually does on a burger.
Absolutely. My homemade mayonnaise gives a richer result, but a jar from the grocery store works. Stick to full-fat mayo, because light versions release water and thin the sauce out after a day in the fridge.
Five to seven days in an airtight container in the fridge. Do not freeze it: mayonnaise-based sauces break when they thaw and never come back together. If you are making it for company, prepare it the day before at the latest, that is when it tastes best.
Raw vegetables first, that is what it was built for. After that, anything crispy: my Air Fryer French fries, my smoked BBQ onion rings wrapped in maple bacon, my homemade chips and my fried chicken wings. It also replaces the sauce in a homemade burger without breaking a sweat.
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