If one of your favourite foods is corned beef as an addition to a sandwich or maybe an easy dinner, you might be wondering how many syns the lean version of this salt beef has on the slimming world plan.

Lean corned beef has on average around 7.5 syns for an 100g portion or around 3.5 syns a slice, making it average in syns and therefore should be consumed within moderation.
In our syn guide below, we will take you through how much lean corned beef you can have on the slimming world, some syn values and low syn corned beef alternatives for a high protein meal.
At 7.5 syns for 100g and around 3.5 syns for a slice, lean corned beef can be very high in syns or low in syns depending on the portion. You could have around 200g or five slices of lean corned beef before using your whole daily syn allowance.
We would recommend having lean corned beef in moderation however since it can be high in fat still despite being lean, having nearly 8g of fat for just an 100g portion, it's also high in salt.
Lean corned beef and corned beef has a similar syn value no matter the brand, to help you stay on track with your syns, we've listed them down below.

If you find corned beef to be too high in syns and you are looking for a low syn alternative, we've got some great options for you to check out down below.

Overall, lean corned beef is both high and low in syns, lean corned beef slices are often low in syns, having 3.5 syns per slice and tinned corned beef having around 7.5 syns for 100g. To save syns we recommend having this beef in moderation or choosing syn free meats such as lean beef mince and lean beef slices which are lower in sodium and fat.
Syn values are calculated using a formula based on calories, saturated fat and sugar content per serving. They’re not the same as calories — a product can be low in calories but higher in syns if it’s high in sugar or fat. Always check the official Slimming World app for the most accurate and up-to-date syn values.
Yes. When manufacturers reformulate their products, the syn value can go up or down. This is why we recommend double-checking with the Slimming World app or your consultant, especially if a product’s packaging has changed recently.
Most Slimming World members work with 5 to 15 syns per day. Your consultant will advise on the right amount for you. The key is to use your syns on the things you enjoy most — whether that’s a chocolate bar, a glass of wine, or a packet of crisps.
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22 May 2023. Slimming World's app states that 100g of Princes Lean Corned Beef is 2.5 syns, not 9 as stated in your article. This is a vast and misleading difference which should be rectified in your article.