Unsweetened Soy Milk (Best Option)
1:1 (1 cup soy milk per 1 cup whole milk)Soy milk has a protein and fat composition similar to whole milk, which helps maintain the sauce’s body and mouthfeel in stir-fry dishes. Its heat stability prevents curdling during high-heat cooking.
To ensure the best results, use unsweetened soy milk and add it towards the end of cooking to prevent any separation. Stir continuously to integrate it smoothly.
Compared to whole milk, soy milk maintains a similar creaminess and does not introduce unwanted flavors, making it the closest functional substitute in stir-fry applications.