Hartley's

Yes — the Hartley's 10 Cal jelly pots are Free on Slimming World. At just 10 calories per 125g pot, they calculate to 0.5 syns under the standard formula, which rounds to Free. They've been a staple Free food in the SW community for years and are one of the most recommended products in group. Always verify with the official Slimming World app, but these have been consistently Free for a long time.

This is really important — the regular Hartley's jelly pots look almost identical to the 10 Cal version on supermarket shelves. The key thing to check is that the label clearly says '10 Cal' and that the calorie count per pot is around 10 calories. The regular version is approximately 84 calories and worth 4 syns, so picking up the wrong one by mistake is easily done. Look for the '10 Cal' branding on the front of the pot before you buy.

The sugar-free sachets are incredibly versatile on plan. The most obvious use is making a large bowl of jelly (570ml per sachet) as a Free dessert. But lots of members also layer jelly with fat-free yogurt for a simple pudding, use it to make jelly 'shots' in small glasses for group nights, or set it in a tray and cut into cubes to mix into fruit salad. The sachets are also great for making low-syn jelly cheesecakes using a HexB biscuit base.

In theory yes, since they're Free, but Slimming World's general principle is that Free foods should satisfy genuine hunger rather than be eaten in unlimited quantities purely for pleasure. In practice, most members eat one or two pots per day as a dessert or snack without any issue. If you find yourself eating large numbers and progress has stalled, it may be worth tracking. For most people, though, a couple of jelly pots per day is completely fine.

The regular (non-diet) Hartley's strawberry jelly pot is 4 syns at 84 calories for a 125g pot. It's worth knowing this figure because the packaging can be confusingly similar to the Free 10 Cal version. If you're shopping in a hurry, double-check you're putting the right ones in your basket. The 4-syn version isn't a terrible choice, but spending those syns on the wrong product when the Free version is right next to it on the shelf is frustrating.