⭐ Caster Sugar (Best Dairy-Free Option)
1 teaspoon per 1 teaspoon of granulated sugarCaster sugar has finer crystals than granulated sugar, which allows it to dissolve rapidly in the warm butter and egg mixture of Hollandaise. This rapid dissolution is critical to maintaining the sauce’s smooth, velvety texture without any graininess.
To ensure success, add the caster sugar slowly while whisking continuously to promote even distribution and prevent any undissolved sugar granules. Avoid adding too much at once to maintain the emulsion’s stability.
Compared to granulated sugar, caster sugar preserves the classic flavor and texture of Hollandaise without altering the sauce’s delicate balance, making it the most seamless substitute.