Why should the spices be not added directly to the ketchup?

Adding spices directly to ketchup can alter its flavor profile unpredictably, making it difficult to achieve the desired taste balance. Additionally, spices may not fully integrate, leading to an uneven distribution and inconsistent flavor throughout the condiment. Instead, it's often better to create a spice blend or infusion that can complement the ketchup, allowing for a more harmonious and controlled flavor development. This approach also enhances the overall culinary experience.