Preschools are encouraged to repeatedly offer milk even for children who dislike it. Picky eating is a learnt behaviour, and so repeatedly offering milk to the child and encouraging them to drink a sip will increase the chances of acceptance. A study showed that children with picky eating behaviour are likely to accept the particular food after trying the same food over time (typically 15 to 20 times).Other than milk, preschools may also serve other calcium-fortified beverages such as malted beverages or soy milk.