
Tinned mackerel makes an easy meal, whether you use it sandwiches or on top of a salad for an extra boost of protein, but how many syns does this tinned fish have?
Tinned mackerel can be syn free on slimming world as long as it's in tomato sauce with no oil, mackerel tinned in oil however has to be synned.
To help you stay on track when eating tinned mackerel, we've put together a small guide below which will cover how many syns tinned mackerel has, syn values, some low syn tinned fish alternatives and a slimming world recipe using tinned mackerel!
As we mentioned above, tinned mackerel has to vary syns according to how the fish is stored, tinned mackerel in oil has syns while most tinned mackerel in tomato sauce is syn free, still, some in tomato sauce do have oil so its good to double-check.
On average, tinned mackerel in olive oil has 6.5 syns for half a tin, mackerel stored in sunflower oil also has a similar syn value once drained for half a tin, making them very high syns and consuming nearly half of your daily allowance.
This doesn't mean mackerel isn't allowed in the slimming world however, this type of fish is full of good oily fats for your body, helping you stay fuller for longer, just ensure it's within your syn allowance.
Tinned mackerels syns vary according to how the fish is stored, whether in oil or sauce, we've listed some popular brands along with their syn values down below.
If you find tinned mackerel too high in syns there are plenty of other kinds of low syn tinned fish for quick and easy lunches.
We've listed some of their syn values below, keep in mind that most tinned fish on the SW plan is syn free as long as it is in brine or without oil.
Since tinned mackerel is syn free on slimming world (when in tomato sauce or brine), you can use it to make some low syn SW meals for an easy lunch.
Below we've put together an easy tinned mackerel curry.

Overall, tinned mackerel has syn values varying between 6-7 syns for half a can when stored in olive oil, sunflower oil and other sauces, in tomato sauces without oil you will find that mackerel is syn free. We always suggest checking the ingredients before using tinned mackerel since you might often find the fish is stored in oil.
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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