Abstract: When dispensing unhomogenized materials from bottles such as those containing some salad dressings, mint sauce and the like, it is difficult to obtain a portion thereof with the correct proportions of the unmixed ingredients even though they are shaken before dispensing, because of the rapid settlement of the heavier fraction or fractions. The present device consists of a small cylinder insertable in or formed integrally with the bottle neck and having a vertical web dividing the neck into two chambers, one chamber being open at the upper and lower ends and the other being closed at the base and open at the top to communicate with the top portion of the first chamber. When the cap is secured to the top of the bottle neck, the contents can be shaken whereupon the bottle is inverted so that the contents flow through the first chamber and fill the second chamber.