If you’re working in a hot climate, place a medium glass or metal bowl in the fridge about half an hour before you intend to whip your cream.
Sieve your sugar into a small bowl and whisk in the xanthan gum. It is very important to be light handed with xanthan gum as it can easily become too much and make for a slimy end result. It also helps to whisk the xanthan gum in with the sugar as xanthan gum has a tendency to clump when added directly to liquid.
When you are ready to whip your cream, pour it into the cold bowl. Use hand beaters to whip the cream on a medium speed. To start, the cream will have large bubbles on the surface before the bubbles begin to dissipate. After that, you should feel the cream thickening under the beaters. Finally, you should see tracks from the beaters in the cream and then soft peaks should start to form. If you intend to add vanilla or liquid flavouring, add it here.
When you are 90-95% happy with how whipped the cream is, add the sieved sugar mix. Xanthan gum will thicken the cream very quickly, so you want to be happy with the texture before you add it. Make sure all the sugar is mixed in and then stop beating.
If in doubt, stop beating – cream can easily be over-whipped and start to form butter.
Use your whipped cream promptly and store any leftovers in the fridge. You can also freeze and defrost whipped cream leftovers.