Rinsing the mouth after drinking milk

Ibn Abbas (may Allah be pleased with him) narrated the Prophet (peace and blessings be upon him) drank some milk then called for some water. Once he got the water he rinsed his mouth then said, It has fat.[Collected by Bukhari 211 and Muslim 358]

With regards to the above Hadeeth, how many times is it recommended to rinse the mouth after having drank milk in order to fulfil the Sunnah? Just once or a few times until there is no fat remaining?