Not too bad, worth a try.
Used this for sugar free cupcakes and it's not too bad. The cakes rose really well, but did form a pretty thick crust as they cooled. Taste and texture wasn't the same as sugar, but as an alternative it was acceptable and a nice treat for someone who's not been able to have anything sweet for months! I DO NOT recommend the Canderel icing sugar though - that was absolutely gross! I would bake with this product again but would top with cream and fresh fruit which I think would help moisten the sponge rather than try to ice it!
Do NOT buy for baking.
Do NOT buy this for baking! I've been making sponge cakes for 45 years, every one perfect. Had to buy this because no caster sugar available. As soon as i mixed this with the butter, it just went really wet. The cake has hardly risen, i've never had that before, so it must be this Candarel. The price is outrageous aswell!