Half-and-Half diluted with water (Best Option)
3/4 cup half-and-half + 1/4 cup water per 1 cup whole milkHalf-and-half contains about 10-12% fat, higher than whole milk's ~3.5%. Diluting it with water reduces the fat concentration to approximate whole milk, maintaining the balance of fat and moisture critical for scone texture. The fat contributes to tenderness and crumb structure, while the water ensures the dough isn't too dense.
For best results, mix thoroughly and use cold liquid to keep the dough from becoming too sticky. Avoid overmixing after adding the liquid to prevent tough scones.
Compared to whole milk, this substitute yields scones with very similar tenderness, crumb, and browning, making it the closest match in both texture and flavor.