One of the key advantages of 400ml jars is their size. At just the right capacity, they are neither too large nor too small, making them ideal for various applications. Whether it’s for preserving homemade jams and jellies, marinating vegetables, or simply storing dry goods like pasta or sugar, 400ml jars provide an optimal space for a myriad of items. In culinary settings, these jars make portion control a breeze. For example, when meal prepping, one can conveniently use jars to store individually portioned salads, snacks, or smoothies, ensuring both proper serving sizes and easy access.