If you are cooking dinner and need an easy side, stocking up on some frozen mashed potato might seem like a great idea, but some pre-made mashed potato mixes have syns on the slimming world, meaning you need to be careful about the type you pick.

Iceland frozen mash potato has around 5 syns for 100g or 10 syns for a 200g serving making it high in syns on the plan, we, therefore, suggest having this side in moderation.
We've discussed in further detail below why Iceland's frozen mash potato has syns and some low syn alternatives for easy sides.
At 5 syns for 100g, you could have up to three portions of Iceland's frozen mash potato before using all of your 15 syn daily allowances.
This mashed potato has a syn value due to mixed ingredients such as milk and butter, only plain mashed potato is syn-free on the SW plan.
Potatoes are syn-free on the slimming world, making them excellent for sides like mashed potatoes and chips, but they are only syn-free if you do not add oil to them or butter.

Chips, for example, can be kept syn-free by using low cal cooking spray instead and mashed potato can be softened with options such as fat-free quark.
If you find Iceland's frozen mashed potatoes to be too high in syns, there are plenty of other pre-made options for a quick and easy side.

To conclude, Iceland's frozen mashed potato is high in syns having 5 syns for a 100g serving, this is because the mashed potato is mixed with ingredients such as milk and butter which is what adds the syns to the potato.
In order to save syns, we suggest making your mashed potato at home which is syn-free, and adding foods like quark to help make the mash more creamy.
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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