Low Swip Sauces: The Best Ketchup, Mayo and More
Let’s be honest. A burger without ketchup, a sandwich without mayo, or a stir-fry without soy sauce just feels a bit sad. Sauces and condiments are one of life’s small pleasures, and nobody wants to give them up when they are trying to eat well or follow a plan like Slimming World.
The good news is that you do not have to. With a little know-how about what is actually in your favourite sauces, you can make smarter choices without feeling like you are missing out. This guide covers the sugar and salt content of popular condiments, explains how to read food labels, and shares tips for finding low swip sauces that still taste great.
Whether you are counting swips on Slimming World or just trying to cut back on added sugar and salt, this post has everything you need.
Why Sauces Add Up Faster Than You Think
A tablespoon of ketchup does not seem like much. And it is not, on its own. The problem is that most of us are not reaching for a single, level tablespoon. We are giving the bottle a good old squeeze and not thinking twice.
Sauces are easy to underestimate because they come in small amounts. But they can be surprisingly high in sugar, salt, and calories, especially the ones that taste the sweetest or most savoury.
On Slimming World, ketchup and BBQ sauce are counted at around 1 swip per level tablespoon, while light mayonnaise comes in at around 2 swips per tablespoon. Regular full-fat mayonnaise is higher still. Those numbers can creep up quickly if you are generous with the squeezy bottle.
You can find more on swip values for sauces we love in our house and our other favourite everyday foods in my Slimming World SWIPS FAQ guide.
What Does “Low Sugar” or “Reduced Sugar” Actually Mean?
Before we look at specific low swip sauces, it helps to understand what the labels actually mean.
According to the NHS, adults should have no more than 30g of free sugars a day. That is roughly 7 sugar cubes. Free sugars are the ones added to food and drinks during manufacturing or cooking, plus the sugars found naturally in honey, syrups, and fruit juices.
When you look at a nutrition label, you will see a figure for “of which sugars.” This includes all sugars, both added and naturally occurring ones like those found in tomatoes. Products are classed as:
- High sugar: more than 22.5g of total sugars per 100g
- Medium sugar: between 5g and 22.5g per 100g
- Low sugar: 5g or less per 100g
Many standard ketchups fall into the medium category, with around 22g to 24g of sugar per 100g. A “reduced sugar” version typically contains noticeably less than the standard version, though the exact amount varies between brands.
The traffic light system on the front of the packaging makes this easier to spot at a glance. A green label for sugar means low, amber means medium, and red means high.
Salt in Sauces: The Hidden Danger
Sugar gets a lot of attention, but salt is just as worth watching, especially in sauces. Ketchup, soy sauce, mayonnaise, and many shop-bought dressings can all be surprisingly high in sodium.
According to the British Heart Foundation, adults should eat no more than 6g of salt per day, roughly one level teaspoon. Eating too much salt raises blood pressure, which increases the risk of heart attack and stroke.
The traffic light thresholds for salt per 100g are:
- Low (green): 0g to 0.3g
- Medium (amber): 0.31g to 1.5g
- High (red): more than 1.5g
Soy sauce is one of the saltiest condiments around and would sit firmly in the red category per 100g. Standard ketchup and brown sauce are more moderate, usually falling in the amber range. But again, it depends on the brand and how much you use.
A Look at Popular Sauces and Their Sugar and Salt Levels
Here is a quick breakdown of common sauces and where they tend to sit in terms of sugar and salt content. Always check the label of the specific brand you are buying, as values can vary quite a bit.
Tomato Ketchup
Standard ketchup is one of the most popular condiments in the UK. It tends to be low in fat but contains a fair amount of sugar, often around 22g to 24g per 100g. Most of this comes from tomatoes and added sugar.
Reduced sugar versions are widely available and can contain around half the sugar of the standard version. They are worth trying if you use ketchup regularly.
Mayonnaise
Full-fat mayo is high in calories and fat, but it is surprisingly low in sugar. The bigger concern is the calorie count. Light or reduced fat versions cut the calories and fat significantly, though they sometimes compensate with slightly more sugar to improve the taste.
If you are making healthier burgers at home, swapping full-fat mayo for a lighter version or using Greek yoghurt as a base is a great way to keep things tasty. I have more ideas for healthier condiment swaps in my guide to making healthier burgers.
BBQ Sauce
BBQ sauce tends to be high in both sugar and salt. Many standard versions contain around 25g to 30g of sugar per 100g. Reduced sugar versions exist but are less common than reduced sugar ketchup, so it is worth checking a few brands.
Soy Sauce and Related Sauces
Soy sauce is very high in salt. Even a small amount contributes significantly to your daily salt intake. Reduced sodium soy sauce is a better option if you use it regularly in cooking or at the table. It still has a good depth of flavour but with considerably less salt.
Sweet Chilli Sauce
Sweet chilli sauce is low in fat but can be high in sugar. It works well as a dipping sauce because you tend to use a smaller amount than you would with something like ketchup on chips. Hot chilli sauces (the thinner, spicier kind) are usually lower in both sugar and calories and are a good choice when you want flavour and low swip sauces.
As I shared in my guide to kebabs on a diet, chilli sauce is typically a much better option than garlic mayo when you are watching your intake. Garlic mayo can add 100 to 200 calories per generous serving.
How to Read a Sauce Label in Under a Minute
Food labels can look overwhelming at first, but once you know what to look for, it takes seconds. Here is a simple method whcih will help you find healthier sauces which are also often low swip sauces:
Step 1: Flip the bottle and find the nutrition table. Look at the “per 100g” column.
Step 2: Check the “of which sugars” figure. Anything over 22.5g per 100g is classed as high. Anything under 5g is low.
Step 3: Check the salt figure. Aim for under 1.5g per 100g where possible.
Step 4: Look at the portion size. The “per serving” column shows you what a single tablespoon or portion actually contributes to your day.
Step 5: Check the ingredients list. Sugars near the top of the list means the product is high in added sugar. Watch out for names like glucose syrup, fructose, corn syrup, or fruit concentrate, as these are all forms of sugar.
The NHS has a helpful guide on reading food labels if you want to go deeper.
Tips for Cutting Down on Sugar and Salt in Sauces
You do not need to go cold turkey on your favourite condiments or constantly look up low swip sauces. Small changes make a real difference over time. If you are not wanting to count the swips, don’t follow Slimming World, or just want to make better choices without too much commitment then here are some tips.
Switch to reduced sugar versions. Many brands now offer a lower sugar version of their most popular sauces. The taste is often very close to the original, and you will barely notice the difference after a week or two.
Make your own. Homemade sauces give you complete control over what goes in. A simple homemade tomato sauce for burgers or pasta can have far less sugar and salt than the shop-bought kind. You can flavour it with garlic, herbs, and a splash of vinegar instead.
Use herbs and spices. Chilli flakes, smoked paprika, garlic, lemon juice, and fresh herbs can add a huge amount of flavour without any sugar or salt. These are particularly good for marinating meat or seasoning roasted vegetables.
Measure your portions. Even a high-sugar sauce becomes much more manageable when you use the right amount. A level tablespoon of ketchup is a very different thing to a quarter of the bottle.
Try vinegar-based options. Hot sauce, mustard, and white wine vinegar are all very low in sugar and calories. They work well as a condiment or a base for homemade dressings.
If you are making kebabs at home, using spices like cumin, coriander, and paprika in your marinades means you do not need to rely on sugary or salty sauces at all. Find some ideas in the fakeaway kebab guide.
Low Swip Sauces – Frequently Asked Questions
Is ketchup low in swips?
Yes, at roughly 1 swip per level tablespoon, ketchup is one of the more manageable condiments on Slimming World. The issue is portion size. Stick to a tablespoon and it is a perfectly reasonable choice for low swip sauces.
Which sauce is the lowest in sugar?
Mustard (the classic yellow or Dijon kind) and hot chilli sauce tend to be among the lowest in sugar. Full-fat mayo is also low in sugar, though it is high in calories and fat. Soy sauce is low in sugar but very high in salt.
Is light mayonnaise better than full-fat?
For calorie and fat content, yes. Light mayo typically has significantly fewer calories per tablespoon. It may contain slightly more sugar to compensate for the reduced fat, so checking the label is always a good idea. It is a popular choice when people look for low swip sauces as it is easy to spot and readily available.
Can I have sauce on Slimming World?
Yes. Most sauces are counted in swips rather than being completely off the menu. Ketchup and BBQ sauce are around 1 swip per tablespoon, while light mayo is around 2 swips. Using low swip sauces in moderation is absolutely fine.
What is the saltiest common sauce?
Soy sauce is by far the saltiest condiment you are likely to use at home. Even a small splash can contribute significantly to your daily salt total. Reduced sodium soy sauce is widely available and a much better everyday choice.
Is BBQ sauce or ketchup healthier?
They are fairly similar in terms of swips, both sitting at around 1 swip per tablespoon. However, BBQ sauce can be higher in sugar per 100g than ketchup, depending on the brand. Always compare labels before buying any potential low swip sauces.
Small Changes, Big Difference
Sauces are not the enemy and they can be ok. They make food more enjoyable, and enjoyable food is food you will actually want to eat. The goal is not to cut them out but to be a bit more aware of what is in them and how much you are using. This is why these low swip sauces are a perfect swap.
Choosing reduced sugar ketchup, measuring your mayo, and experimenting with herb-based flavours are all small steps that add up over time. Combined with cooking more at home and checking labels before you buy, they can make a real difference to your sugar and salt intake without making mealtimes feel boring.
