Cane Sugar (Best Option)
1:1 by volumeCane sugar is chemically very similar to granulated sugar (sucrose) and has comparable crystallization properties, which are critical for the dough structure and caramelization during frying. This ensures the doughnut dough behaves as expected during mixing and frying.
When substituting, use the same volume as granulated sugar. No adjustments to liquid content or frying time are necessary. Cane sugar dissolves well in dough and contributes to the Maillard reaction, producing the characteristic golden crust.
The final doughnuts will have nearly identical texture, sweetness, and color compared to those made with granulated sugar, making it the most seamless substitute.