The Screwtape Letters wrote:

One of the great, achievements of the last hundred years has been to deaden the human conscience on that subject, so that by now you will hardly find a sermon preached or a conscience troubled about it in the whole length and breadth of Europe. This has largely been effected by concentrating all our efforts on gluttony of Delicacy, not gluttony of Excess. Your patient's mother, as I learn from the dossier and you might have learned from Glubose, is a good example. She would be astonished—one day, I hope, will be—to learn that her whole life is enslaved to this kind of sensuality, which is quite concealed from her by the fact that the quantities involved are small. But what do quantities matter, provided we can use a human belly and palate to produce querulousness, impatience, uncharitableness, and self-concern? Glubose has this old woman well in hand. She is a positive terror to hostesses and servants. She is always turning from what has been offered her to say with a demure little sign and a smile "Oh please, please...all I want is a cup of tea, weak but not too weak, and the teeniest weeniest bit of really crisp toast". You see? Because what she wants is smaller and less costly than what has been set before her, she never recognises as gluttony her determination to get what she wants, however troublesome it may be to others. At the very moment of indulging her appetite she believes that she is practising temperance. In a crowded restaurant she gives a little scream at the plate which some overworked waitress has set before her and says, "Oh, that's far, far too much! Take it away and bring me about a quarter of it". If challenged, she would say she was doing this to avoid waste; in reality she does it because the particular shade of delicacy to which we have enslaved her is offended by the sight of more food than she happens to want.

The real value of the quiet, unobtrusive work which Glubose has been doing for years on this old woman can be gauged by the way in which her belly now dominates her whole life. The woman is in what may be called the "All-I-want" state of mind. All she wants is a cup of tea properly made, or an egg properly boiled, or a slice of bread properly toasted. But she never finds any servant or any friend who can do these simple things "properly"—because her "properly" conceals an insatiable demand for the exact, and almost impossible, palatal pleasures which she imagines she remembers from the past; a past described by her as "the days when you could get good servants" but known to us as the days when her senses were more easily pleased and she had pleasures of other kinds which made her less dependent on those of the table. Meanwhile, the daily disappointment produces daily ill temper: cooks give notice and friendships are cooled. If ever the Enemy introduces into her mind a faint suspicion that she is too interested in food, Glubose counters it by suggesting to her that she doesn't mind what she eats herself but "does like to have things nice for her boy". In fact, of course, her greed has been one of the chief sources of his domestic discomfort for many years.

Now your patient is his mother's son. While working your hardest, quite rightly, on other fronts, you must not neglect a little quiet infiltration in respect of gluttony. Being a male, he is not so likely to be caught by the "All I want" camouflage. Males are best turned into gluttons with the help of their vanity. They ought to be made to think themselves very knowing about food, to pique themselves on having found the only restaurant in the town where steaks are really "properly" cooked. What begins as vanity can then be gradually turned into habit. But, however you approach it, the great thing is to bring him into the state in which the denial of any one indulgence—it matters not which, champagne or tea, sole colbert or cigarettes—"puts him out", for then his charity, justice, and obedience are all at your mercy.

Mere excess in food is much less valuable than delicacy. Its chief use is as a kind of artillery preparation for attacks on chastity.