For any combinations of how many mix-ins or more should you use a quarter of the amount?

Using a quarter of the amount for any combinations of three mix-ins is correct because it ensures that each ingredient can be tasted without overpowering the overall flavor of the dish. When combining multiple ingredients, particularly in culinary contexts like with toppings or mix-ins, portion control is essential to maintain balance.

With three mix-ins, this approach allows the unique characteristics of each to shine through, avoiding a situation where one or more components might dominate. In contrast, using too much of any single mix-in could lead to an overwhelming taste that detracts from the intended flavor profile. By using a quarter of the amount for three mix-ins, you are adhering to a culinary principle that emphasizes moderation and harmony in flavor.