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Discover the kassing method

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If you are currently breastfeeding your baby and need or want to combine breastfeeding with bottle feeding, you have probably heard of the Kassing method. But what does the Kassing method involve? This is a very fashionable trend, which seeks to offer a solution to the nipple confusion factor suffered by babies when using a generic bottle, totally different from the mother’s breast, which affects their breastfeeding. And does the kassing method really work? Well, the AEPED does not really make a recommendation, but we are going to tell you all about it, to help you make the best decision with this post discover the Kassing method.

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Kassing Method

The Kassing method was born to prevent the loss of breastfeeding when it needed to be combined with bottle feeding. And this is because until the arrival of the Happymami project, with its bottles made to measure for each mother for her baby, all bottles were generic, totally different from each mother’s body. Because they were created to replace breastfeeding, and only the baby’s orography and the best design to facilitate the sucking of the newborn were taken into account.

These generic bottles cause more than 50% of infants who try a generic bottle to lose their breastfeeding, and methods such as Kassing were a stopgap to ensure that breastfeeding was not affected as much. But thanks to the Happymami Project, you now have the opportunity to design the bottle that is most representative of your anatomy, preventing your baby from suffering from the confusion factor and protecting your breastfeeding.

Because for the development of our Happymami bottles, we have taken breastfeeding into account in its totality…. The anatomy of the mother, the speed of The study of breast milk ejection, its phases, the baby’s needs, the type of sucking… An exhaustive study that has led us to develop a bottle that is unique in the world, with attention to detail, in which the protagonist is the mother and her baby.

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kassing method works

So how does the Kassing method work?

We must bear in mind that the babies do not know what a breast is, or what is a bottleThey have reflexes that allow them, for example, to feed themselves, like the search reflexwhich is activated by stimulating the perioral area of the newbornThe other very important reflex for our subject, is the “reflex of the mouth”, opening the mouth towards the stimulated side. sucking reflex which is activated when the oral cavity, especially the palate, is stimulated, initiating the newborn suction movements.

If you are breastfeeding, your baby will learn over time what his mother’s breast looks like, a large or small cup, with a characteristic nipple that he recognizes as soon as he feels it in his mouth, as well as a flow of milk ejection, etc. This is the moment when you feel that you have breastfeeding established. But you need to, for example, because the baby is not gaining enough weight, or you want to introduce a bottle, and without affecting breastfeeding, there are two options.

You can choose a generic bottle totally different from your breast with which our recommendation is that you use the Kassing method. Or you can choose a Happymami bottle, designing the bottle that will best protect your breastfeeding, with which the Kassing method is not necessary. And in case, after reading this post, you decide to choose a generic bottle, we are going to give you the guidelines that recommend this method.

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How to do the Kassing method?

The Kassing method was created by an American breastfeeding consultant Dee Kassing, to help moms who offer a generic bottle to their babies, and prevent them from losing their breastfeeding, and is based on the concept of making your baby have to make “an effort” to feed from the bottle, because of it:

  • Use a slow flow nipple:

The recommendation to use a slow flow is so that your baby’s milk does not flow continuously. If you use a Happymami you should not use a lower flux. In order to develop our Happymamis bottles, we studied breastfeeding as a whole. Breast milk ejection, outflow at each stage, baby’s suckling, baby’s needs …. And from there we developed our flows.

So if you have a 4-month-old baby and you put him on a 2-month-old infant formula, the most likely risk is that your baby will reject the bottle. That is why our recommendation is that you take the flow that corresponds to your baby’s age, and follow the guidelines that we will give you when you make your purchase so that your baby takes the bottle without affecting your breastfeeding.

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The theory behind this indication is to get them to take it slowly and so that the milk does not fall due to gravity. Be careful because sometimes, thinking about doing the Kassing method, when the bottle is not completely full, what happens is that when your baby sucks from the bottle, he does not get any milk, and what he does is swallow air, and suffers from newborn colic, in addition to the tantrum he has for not eating. We know it sounds silly, but it happens more often than we think.

do kassing method
  • Stimulates the corner of your baby’s mouth.

Stimulate the corner of your baby’s lips, to trigger your baby’s search reflex and once the mouth is open we introduce the bottle.

  • Let it suck 20-30 times and remove from the mouth quickly.

If you use Happymami, do not make these changes, since it is prepared to imitate the mother’s breast.

  • Restart the whole process.

Start the process again from the beginning, monitoring your baby’s satiety signals, without forcing, remember that the amount of milk per bottle that you can find in the guides are indicative. Each baby is unique, and we must take into account the baby’s appetite.

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Design my bottle

Conclusion discover the kassing method

As we always tell you, every baby is unique, so you will have to adapt this text to your needs, achieving your continuous learning. There are various currents on the internet about everything, and more about motherhood, so we always advise you when you read a blog to know that they are based on scientific evidence.

And on maternity and upbringing, nothing like the AEPED (Spanish Association of Pediatrics) and in this case, it does not pronounce on this method. For our part, with Happymami, we always seek to give you the best solution if you are breastfeeding and want or need to use a bottle without affecting your breastfeeding. We work very hard every day to keep offering you the best, and by the way you are doing great! keep it up.

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Picture of Manuel Fernández
Manuel Fernández
Grado universitario de enfermería experto en obstetricia y ginecología (matrón) por la universidad de Jaén.Miembro Comité Lactancia Materna Departamento 16 de salud Marina Baixa.Trabajador actual del Hospital Marina Baixa ginecología y obstetricia. Jefe del servicio de matronas y CCO de Happymami. Master en "Integración en cuidados y resolución de problemas clínicos en enfermería" Experto Universitario en "Indicación, uso y autorización de medicamentos y productos sanitarios en cuidados generales de enfermería" Experto Universitario en "Urgencias y Emergencias Vitales" Formación continuada acumulada de 3.229 horas Publicaciones: Vol. 11 nº 3 Septiembre 2009. Página 16-20. Revista: "Revista oficial de la sociedad española de enfermería oncológica" Título: Extravasación por antraciclinas a propósito de un caso. Revisión de la literatura.
Guia forma pecho tallas 2022
Guías tallas 2 centímetros

[Lactancia Materna] 

Sabemos que durante la toma se produce una elongación del pezón, y la hemos tenido en cuenta durante el desarrollo de nuestras tetinas. Selecciona el pezón con el que te sientas más representada previo a la toma. 

Y por último, si usas pezoneras ten en cuenta el tamaño de la pezonera. 




¡Hola soy Alba! El holograma real de una de nuestras matronas y voy a acompañarte durante todo el proceso de diseño ¡Encantada de conocerte!

Recuerda que el diseño serán 5 pasos y en cada paso encontrarás distintas opciones entre las que irás deslizando para encontrar tu diseño perfecto.

Si das lactancia materna sigue las pautas con la marca:

[Lactancia Materna]

Si das biberón de forma exclusiva sigue las pautas con la marca:

[Biberón Exclusivamente]

1º Tipo de pezón

2º Inclinación de la tetina

3º Velocidad del flujo

4ºCapacidad del Vaso

5ºDale Color

Si tienes dudas con tu diseño puedes contactarnos por WhatsApp para que te ayudemos.

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[B] Escogemos el flujo según la edad del bebé.

Recuerda que si vas a usar cereales, tienen una densidad mayor a la leche líquida, por eso tenemos disponible un flujo exclusivo para cereales y/o papillas


[LM] Existen corrientes de usar un flujo menor correspondiente a la edad del bebé.

Con Happymami no hace falta, nosotras para desarrollar nuestros Happymamis estudiamos la lactancia materna en su conjunto. La eyección de leche materna, el flujo de salida en cada etapa, la succión del bebé, las necesidades del bebé…. Y a partir de ahí desarrollamos nuestros flujos.

Entonces si tú tienes un bebé de 4 meses y le pones un flujo para bebés de 2 meses, lo que probablemente tenga más riesgo es que tu bebé rechace el biberón.

Por eso nuestra recomendación es que cojas el flujo que le corresponde por edad, y sigas las pautas que te daremos al realizar tu compra para que tu bebé coja el biberón sin afectar a tu lactancia materna.


[B] Si tu bebé sufre muchos cólicos necesitamos un biberón con un sellado total, que corresponde a la inclinación pronunciada. Por el contrario, usaremos una inclinación media, para casos aislados de cólicos. Y una inclinación suave en casos especiales indicados por nuestras matronas.


[LM] Puedes ponerte de perfil y observarte el pecho.

  • ¿Tienes un pecho totalmente plano? cogemos inclinación suave.
  • Si acaba totalmente en punta, escoge inclinación pronunciada.
  • O si más bien es redondito, inclinación media.

Si tienes dudas entre cualquier forma y redondeado, nuestro consejo es que cojas la inclinación media que corresponde al redondeado.


[Biberón exclusivamente] Si es el primer biberón que vas a usar desde el nacimiento, nuestra recomendación es que escojas un pezón medio.Por otra parte, si tu bebé ha usado ya otros biberones y los rechaza, o si al usar el chupete le genera muchos ascos y arcadas a tu bebé escogeremos pezón pequeño.

Guía medir pezón HM

[LM] Necesito que midas la longitud de tu pezón antes de la toma, [GUÍA PARA MEDIR PEZÓN].   

Sabemos que durante la toma se produce una elongación del pezón, y la hemos tenido en cuenta durante el desarrollo de nuestras tetinas. Por eso se tomaron justo esos parámetros de la medida del pezón antes de realizar la toma

Y por último, si usas pezoneras ten en cuenta el tamaño de la pezonera.