Yes, babies can drink cold formula, but that doesn’t mean they will! One of the conveniences of formula is that it can be mixed with cold or room-temperature water and given to the baby. It’s perfectly safe to prepare and serve this way as long as the water source is safe, but some babies have a preference for warmer formula, especially if they started off breastfeeding and are used to the breastfeeding parent's warm, freshly expressed breast milk.