Quick answer: Hindu fasts (vrats) differ in what they allow. On Ekadashi and Navratri most people avoid grains and pulses and eat phalahar: fruit, milk, potatoes, sago and flours such as buckwheat and water chestnut, with rock salt. Karva Chauth is usually kept without food or water until moonrise. Sankashti and Pradosh fasts end in the evening after the puja. Family custom and health always come first.

Key facts
WordVrat or vratam, a vow; upavasa, fasting
Common fast foodPhalahar (fruit-based food): fruit, milk and curd, potatoes, sweet potato, sago (sabudana), makhana, nuts, buckwheat (kuttu), water chestnut flour (singhara), amaranth (rajgira), barnyard millet (samak)
SaltMany use rock salt (sendha namak) instead of table salt
Usually avoidedRice, wheat and other grains, pulses, onion, garlic, meat, eggs, alcohol
HealthPregnant women, children, older people and anyone with a medical condition should ask a doctor before fasting

Why the rules differ

A vrat is a vow, and the vow defines the fast. Some vrats are kept without any food or water until a set moment (sunrise, moonrise, the end of the puja). Others allow one meal, or fruit and milk only, or a special set of "fasting foods". The same vrat is kept differently by different families, regions and sampradayas. The table below describes common practice, not a rule binding on everyone.

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Fasting food rules at a glance

VratHow it is commonly keptCommonly eatenCommonly avoidedWhen the fast ends
EkadashiFull fast, water only, or phalahar; Nirjala Ekadashi without waterFruit, milk, potatoes, sabudana, makhana, kuttu, singhara, rajgira, samak, nutsRice above all; all grains and pulsesParana on Dwadashi, the next morning, within the parana window
NavratriPhalahar for nine days, or on the first and last days; some eat one mealKuttu, singhara, rajgira and samak dishes, sabudana, potatoes, fruit, milk, curdGrains, pulses, onion, garlic, table salt, alcoholDaily after evening puja, or after Kanya Pujan on Ashtami or Navami
Maha ShivaratriFull fast or phalahar, often with a night vigilFruit, milk, sabudana, potatoes, makhanaGrains, pulses, onion, garlicThe next morning after the puja
Karva ChauthWithout food or water from sunriseSargi eaten before dawnAll food and water during the dayAfter sighting the moon and offering water to it
Sankashti ChaturthiFast through the dayFruit, milk, sabudana; some eat nothingGrains for manyAfter moonrise and the Ganesha puja
Pradosh vratFast through the dayFruit and milkGrains for manyAfter the evening (pradosh) Shiva puja
Somavar (Monday) and Sawan SomvarOne meal, or fruit and milkFruit, milk, one sattvic mealOnion, garlic; grains for someEvening, after the Shiva puja
Karthika Somavaram (Telugu)Fast through the dayWater, fruit, milk for someGrains until eveningAfter sunset or after seeing the stars, with lamp-lighting
Tuesday (Mangalvar)One mealA sweet or simple meal, often without saltSalt for some; non-vegetarian foodAfter the Hanuman puja
JanmashtamiFast until midnightPhalahar; panchamrit and makhan prasad after the pujaGrainsAfter the midnight birth puja, or the next morning
Varalakshmi VratamFast until the puja is completeWater, fruit, milkFood until after the pujaAfter the puja, with the naivedyam as the first meal

Check the dates and any local timing (such as moonrise or parana) on the festival's own page, as they change every year and by city.

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Common "vrat" ingredients and what they are

IngredientWhat it isUsed for
Kuttu ka attaBuckwheat flour (not a true grain)Kuttu puri, pakoras
Singhara attaWater chestnut flourPuri, halwa, roti
RajgiraAmaranth seed and flourRajgira paratha, laddoos
Samak or sama chawalBarnyard millet, "vrat rice"Samak rice khichdi, kheer
SabudanaSago, tapioca pearlsSabudana khichdi, sabudana vada, kheer
MakhanaFox nuts, lotus seedsRoasted snacks, makhana kheer
Sendha namakRock saltSeasoning all vrat food

Whether samak, buckwheat and other "vrat grains" are allowed on a given fast is itself a family custom. Some strict observers avoid them too.

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Practical notes for fasting abroad

  • Shopping: kuttu, singhara, rajgira, samak, sabudana and rock salt are sold at Indian grocers in the USA, UK, Canada, Australia, the Gulf and Southeast Asia, especially before Navratri.
  • Cross-contact: buckwheat and other flours are often packed in plants that also process wheat. If you are keeping a strict no-grain fast, or avoiding gluten, check the label.
  • Work days: plan a filling phalahar breakfast and carry fruit, nuts or yogurt.
  • Time zones: the moment a fast ends (moonrise, parana time) is local. Use the city-wise times on the festival pages.
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Health and safety

Fasting is a religious practice, not a medical treatment, and this page makes no health claim for it. Anyone who is pregnant or breastfeeding, diabetic, on regular medication, unwell, elderly, or a child should talk to a doctor before fasting and may keep a lighter vrat (fruit and milk, or one meal). Traditions generally allow this. Drink water unless your vrat is a waterless one, and stop the fast if you feel faint.

Frequently asked questions

Can I eat rice on Ekadashi?

Traditionally no. Avoiding rice and other grains is the most widely kept Ekadashi rule. Many families also avoid pulses.

Why is rock salt used during fasts?

Rock salt (sendha namak) is treated as a pure, unprocessed salt in many traditions, while ordinary table salt is avoided on fasting days. Customs vary.

Can I drink tea or coffee during a vrat?

Many people do on phalahar fasts; others avoid them. On waterless fasts such as Nirjala Ekadashi and Karva Chauth, nothing is taken.

Are potatoes allowed during Navratri?

Yes, in most homes. Potatoes, sweet potatoes and other tubers are common in Navratri vrat food. A few families avoid them.

Is a phalahar fast still a real fast?

Yes. Phalahar is a long-accepted way of keeping a vrat. The Ekadashi and Navratri traditions both include it.

Sources

  • HinduTone festival pages linked in the table above, for each vrat's dates, timings and observance (kept consistent with them).

Customs differ widely by family, region and sampradaya. This page describes common practice and is not medical advice. Last reviewed: 12 November 2026.