Help! No icing sugar.

I would have another go at grinding granulated sugar. A decent processor should do it but you may have to give it longer than you did last time.

I've done it this way
It took a while, and fortunately I do have a fine sieve. It was good enough for me.

Can’t get caster sugar either for love or money! Where do you live Watermeadow because I’ve got loads of icing sugar and no intention of doing much with it? Could I use it instead of caster? Just thought?

In a food processor granulated sugar will first become finer as in caster sugar and then it will turn to icing sugar. Just keep grinding.

Call it 'textured fondant icing' as used by the most fashionable bakers

I thought about grinding granulated sugar, too.

Sorry, can't really help

Luckylegs icing sugar also contains a clumping agent which is usually cornflour, so it might taste a bit odd in cakes, unless you have a recipe that needs cornflour in it?

I have a birthday cake to make for my GS's 21st next week. Being unable to obtain several ingredients I have ordered a Betty Crocker cake mix, an icing topper and 2 tubs of frosting which I can colour and pipe, from Ebay. It will be an expensive cake but very easy!

Luckylegs I live in Wiltshire and can’t travel. Please tell me you and your icing sugar live in the next street!
I haven’t got a food processor, tried grinding sugar in liquidiser and not successful. ☹️

For the last week there has been no shortage of baking ingredients in the shops in my area, including flour. Could you ask your granddaughter to have another look or maybe put out a Facebook appeal? I’m in the Derbyshire area and if you happen to be close to me you are welcome to mine?

Sorry just seen it’s Wiltshire. Apologies

watermeadow I think a local FB appeal should get you your icing sugar quickly.

Success! Facebook (so maddening and so useful) brought a big box of icing sugar to my gate within 20 minutes!

Excellent result watermeadow. Hope your cake turned out just right - it sounds lovely!

Sorry - just noticed this one. So I'm too late with the answer but have you tried making Italian meringue? It's made with sugar syrup, so as you melt it, you can use any sugar.

It's supposed to be really tricky, but there are loads of demonstrations on Youtube. This one is American, but he does go into lots of detail to prevent failure:

preppykitchen.com/how-to-make-italian-buttercream/