How did your daughter get interested in (the concept of) juice? Our two-year-old has never really expressed an interest, but then we don't keep juice at home an

How did your daughter get interested in (the concept of) juice? Our two-year-old has never really expressed an interest, but then we don't keep juice at home and he doesn't get it elsewhere either. He's curious about things we drink that he doesn't get (I drank a bottle of root beer in front of him the other day, he was very confused and curious), but if we put milk in front of him he's got the thing he wants most of all and ignores our drinks entirely.