All these hours in turn revolve around another liturgical act called the mass. This is the liturgical high point of each day. The Carthusian day at St. Hugh's Charterhouse, the Carthusian monastery I joined, is therefore as follows. You can drink water at any time, and have some salt if the body needs it, otherwise eating is restricted to the above times. In the winter months supper consists of only bread and drink, in the summer months it is something like beans on toast.
Lunch is always substantial.
There is no breakfast. Drink consists of tea or coffee or great tasting and very potent home made cider. On these days lunch is also taken together whilst one of the monks read. At St. Hugh's I enjoyed the choice of books. At Ealing Abbey they bored me stiff.