Soft diet
A soft diet is normal food made soft, low in tough fibre, mildly spiced and never fried, for patients moving back to a normal diet.
Aim and principles of the diet
Aim: To plan, prepare and calculate a soft diet for a woman recovering from a viral fever. Principles: A soft diet is a nutritionally adequate diet in which foods are soft in texture, easy to chew and easy to digest, and low in tough fibre. It is the last step before the normal diet and is used after surgery, during recovery from fevers and infections, in mild digestive upsets and for patients who chew poorly. Foods are boiled, steamed, stewed or baked, not fried, because fat delays stomach emptying and fried crusts are hard to digest. Spices are mild. Coarse fibre (raw salads, whole pulses, skins, seeds, tough stems) is avoided, but well-cooked vegetables, peeled ripe fruits and lightly milled cereals are used. Energy and protein follow the patient's needs, because recovering patients must rebuild tissue. Meals can be 5-6 a day. Unlike the semi-solid diet, foods need not be mashed: soft idli, phulka and rice are fine.
Nutrient prescription: Mrs. L, 50 y, 160 cm, 56 kg, recovering from viral fever
| Nutrient | Prescription | Basis and source |
|---|---|---|
| Ideal body weight | 54 kg | (160 − 100) × 0.9 |
| Energy | About 1600 kcal | 30 kcal/kg IBW × 54 = 1620 |
| Protein | About 60 g | 1.0-1.2 g/kg (54-65 g) to rebuild tissue after fever |
| Fat | 20-25% of energy; about 15 g oil | Steamed and boiled foods need little oil |
| Fibre | Low in coarse fibre | Well-cooked, peeled, seedless foods |
| Fluid | About 2 L | About 35 mL/kg; extra fluid after fever |
Foods to include and avoid
| Food group | Include | Avoid |
|---|---|---|
| Cereals | Soft rice, idli, soft dosa, pongal, upma, phulka, bread, rice flakes | Puri, parotta, crisp fried snacks |
| Pulses | Well-cooked dals, moong dal sambar | Whole grams, sprouts, sundal |
| Milk, egg, flesh foods | Milk, curd, paneer, boiled or poached egg, steamed fish, minced or stewed chicken | Fried or tough meat, fried egg |
| Vegetables | Well-cooked gourds, carrot, potato, pumpkin, tender beans | Raw salads, stringy stems, large amounts of cabbage |
| Fruits | Ripe banana, papaya, sapota, stewed apple | Guava with seeds, unripe fruit |
| Others | Mild spices, a little oil | Chillies, pickles, deep-fried snacks |
Sample one-day soft diet menu (Mrs. L)
| Time | Menu | Approx. amount (raw) |
|---|---|---|
| 6.00 am | Tea | Toned milk 100 mL, sugar 5 g |
| 8.00 am | Soft idli (3) with moong dal sambar | Rice 60 g + urad dal 15 g; moong dal 15 g, vegetables 50 g, oil 3 g |
| 11.00 am | Ripe papaya | 150 g |
| 1.00 pm | Soft rice, dal, bottle-gourd kootu, curd | Rice 80 g; tur dal 20 g; vegetables 100 g with moong dal 10 g, oil 3 g; curd 100 g |
| 4.00 pm | Tea with soft vegetable rava upma | Toned milk 100 mL, sugar 5 g; rava 30 g, vegetables 20 g, oil 4 g |
| 8.00 pm | Soft phulka (2) with egg curry (or paneer for vegetarians) | Atta 50 g; 1 egg, tomato and onion 50 g, oil 3 g |
| 9.30 pm | Milk | Toned milk 150 mL, sugar 5 g |
Worked calculation: Mrs. L's soft diet
Mrs. L, 50 years, 160 cm, 56 kg, is recovering from a viral fever and is ready for a soft diet. Find her IBW, energy and protein needs and check the sample menu.
- IBW = (160 − 100) × 0.9 = 54 kg.
- Energy = 54 kg × 30 kcal/kg = 1620, about 1600 kcal.
- Protein = 54 kg × 1.0-1.2 g/kg = 54-65 g; plan about 60 g to rebuild tissue after fever.
- Approximate values used (kcal and g protein per 100 g raw unless stated; rounded from Indian food composition tables, mainly IFCT 2017 and the older Nutritive Value of Indian Foods; a few, such as toned milk, are estimates): toned milk 60 and 3 per 100 mL; sugar 400; rice 355 and 8; urad dal 325 and 23; moong dal 325 and 24; mixed vegetables 30 and 1.5; oil/ghee 900; papaya 35 and 0.5; tur dal 330 and 22; curd 60 and 3; rava 345 and 10.5; atta 320 and 10.5; egg 75 kcal and 6.5 g per piece.
- Cereals (rice 140 g, rava 30 g, atta 50 g): 760.5 kcal, 19.6 g protein.
- Pulses (urad dal 15 g, moong dal 25 g, tur dal 20 g): 196.0 kcal, 13.9 g protein.
- Milk and milk products (toned milk 350 mL, curd 100 g): 270.0 kcal, 13.5 g protein.
- Egg (1 egg): 75.0 kcal, 6.5 g protein.
- Vegetables (mixed vegetables 220 g): 66.0 kcal, 3.3 g protein.
- Fruits (papaya 150 g): 52.5 kcal, 0.8 g protein.
- Oil and ghee (oil/ghee 13 g): 117.0 kcal.
- Sugar (sugar 15 g): 60.0 kcal.
- Energy = 760.5 + 196.0 + 270.0 + 75.0 + 66.0 + 52.5 + 117.0 + 60.0 = 1597.0 kcal.
- Protein = 19.6 + 13.9 + 13.5 + 6.5 + 3.3 + 0.8 = 57.6 g.
- Compare with the prescription: energy 1597.0 ÷ 1600 × 100 = 100%; protein 57.6 ÷ 60 × 100 = 96%.
- Each group is rounded to one decimal and the totals are the sums of those rounded figures; all values are approximate.
IBW 54 kg; prescription about 1600 kcal and 60 g protein. The soft menu gives about 1597 kcal (100%) and 58 g protein (96%).
Preparation and serving tips, and result
- Steam, boil or pressure-cook; never deep-fry, and keep chilli to a minimum.
- Peel and deseed vegetables such as tomato; cook gourds and carrot until tender.
- Make phulka and dosa soft, without crisp edges, and serve sambar or dal for moisture.
- Offer 5-6 meals; small, attractive portions help a tired patient finish the plate.
- Result: The soft diet gives about 1597 kcal and 58 g protein (100% and 96% of the prescription of 1600 kcal and 60 g).
In the diet kitchen, the soft diet uses the normal menu with frying replaced by steaming or boiling and less chilli: idli instead of vada, phulka instead of parotta, stewed instead of fried fish. It is one of the most-ordered diets on surgical and medical wards.
Short answer: “Differentiate a soft diet from a semi-solid diet.” Soft: normal foods made soft and low in tough fibre, needing some chewing (idli, phulka). Semi-solid: thick, mashed foods needing almost no chewing (porridge, khichdi).
Short answer: “Why are fried foods avoided in a soft diet?” Fat delays stomach emptying, and fried crusts are hard to chew and digest.
Structured question: “Plan a soft diet for a patient recovering from fever; give the principles and a sample menu.” Adequate diet of soft, low-fibre, mildly spiced, steamed or boiled foods; 5-6 meals; energy about 30 kcal/kg, protein 1.0-1.2 g/kg. Menu: tea, idli with moong dal sambar, papaya, soft rice with dal, kootu and curd, tea with rava upma, phulka with egg curry, milk.
Soft = SBS: Steamed, Boiled, Stewed. Never fried, never raw, never fiery.