Sour Cream (Best Option)
1:1 by volumeSour cream has a comparable fat content and acidity level to Greek yogurt, which helps replicate the moisture retention and slight tang that enhances burger flavor and texture. The proteins in sour cream also assist in binding the burger mixture.
When substituting, use the same volume as Greek yogurt. Be mindful that sour cream may be slightly less thick, so if the mixture feels too loose, chill it before forming patties.
The final burger will have a slightly richer flavor with a mild tang, closely resembling the original profile achieved with Greek yogurt.