I've mentioned these a few times in some of my recipes...(S'mores, banana splits etc).
These sugar free marshmallows are really worth keeping in the larder for those gorgeous squidgy snacky moments.
I have only ever seen them for sale in Sainsbury's.
(They are Sainsbury's own brand).
You can have 6 for 1pp or they are 5kcal each.
Even though they are smaller than average marshmallows, they react to heat sources in exactly the same way, so will puff up in the microwave and toast (with care) over the barbie.