⭐ Caster Sugar (Best Gluten-Free Option)
1:1 by volumeCaster sugar has finer crystals than granulated sugar, which allows it to dissolve rapidly in the mousse mixture. This is critical because undissolved sugar crystals can cause a gritty texture in the final product. The fine texture also helps incorporate air more evenly when whipping, contributing to the mousse’s lightness.
For best results, ensure the caster sugar is fully dissolved during mixing. If unavailable, you can pulse granulated sugar in a food processor briefly to achieve a similar fineness. Avoid over-processing to prevent turning it into powdered sugar.
Compared to granulated sugar, caster sugar produces a mousse with a smoother mouthfeel and a more consistent texture, enhancing the overall eating experience without altering flavor.