Sour Cream (Best Option)
1/4 cup per 1/4 cup Greek yogurtSour cream has a similar fat content and acidity level to Greek yogurt, which helps maintain the balance of flavors in fried rice. The lactic acid in sour cream enhances the savory and umami notes typical of the dish.
When using sour cream, add it towards the end of cooking to prevent curdling and to preserve its creamy texture. Stir gently to integrate it evenly.
The final dish will have a slightly richer mouthfeel but will retain the desired tang and creaminess, making it the closest match to Greek yogurt in fried rice.