American-style and German-style potato salads differ in their ingredients, flavour profiles, and preparation methods. American potato salad has a creamy dressing base, often made with mayonnaise, while German potato salad utilizes a vinegar-based dressing, giving it a tangy and more acidic flavour. Another difference lies in the serving temperature. German potato salad is traditionally served while still slightly warm or at room temperature, allowing the flavours to meld together. On the other hand, American potato salad is typically served chilled, emphasizing its refreshing and creamy qualities.