Crème Fraîche and sour cream are both cultured dairy products, but they have distinct differences. Crème Fraîche is traditionally made from unpasteurized cream and has a richer, creamier texture and a milder taste compared to sour cream. It's also more stable at higher temperatures, making it suitable for cooking and baking. Sour cream tends to curdle when heated, while Crème Fraîche does not. In essence, if you're looking for a dairy product with a velvety texture and a complex flavor profile, Crème Fraîche is the way to go.