Pure water is always the best option, but for the adult a glass of wine, cider or beer with a meal will provide a pleasant alternative. Fruit juices always provide an acceptable alternative, but this is definitely second best to eating the fruit itself.
Any edible fruit can be used as a source of juice, and if prepared at home should be drunk on the day it is prepared. Cartons of fruit juice from the supermarket are a low cost and healthy alternative.
Milk and milk shakes prepared from whole milk are always acceptable for children or adults.