Yes, yogurt can be added at the end of cooking to impart a tangy flavor to dishes. However, it's crucial to temper the yogurt first to prevent curdling.
Adding yogurt at the end of the cooking process is a great way to introduce a creamy texture and a characteristic tangy flavor to various dishes, especially curries and sauces. The key to successfully incorporating yogurt without it curdling lies in tempering it. Tempering involves gradually raising the yogurt's temperature before adding it to the hot dish. This can be done by taking a spoonful or two of the hot sauce or curry and mixing it thoroughly into the yogurt. Repeat this process a few times until the yogurt is warm. Then, gently stir the tempered yogurt into the main dish. Avoid boiling the dish after adding the yogurt, as high heat can still cause it to separate. The acidity in yogurt tenderizes meat and vegetables, and it also adds a depth of flavor that enhances the overall taste of the dish.
Use full-fat yogurt for the best results and to minimize curdling. The higher fat content helps stabilize the yogurt and prevents it from separating when heated. Also, avoid using sour yogurt, as it can make the dish overly acidic.