# Why Does Aubergine Soak Up So Much Oil? And the Fix

> Aubergine flesh is **spongy and full of air pockets**, and when it hits the oil the air escapes and oil immediately takes its place. The fix is to reduce those pockets before frying — by salting, by pre-heating, or by avoiding frying altogether.

**4 min read**

Aubergine can absorb several times its own weight in oil within minutes. That is not an exaggeration — half a kilo of fried aubergine can carry a full cup of oil, turning a light vegetable dish into the heaviest thing on the table.

## Why it absorbs more than any other vegetable

The flesh of an aubergine has a strange structure: it is **a network of cells with a great many air pockets** — closer to a sponge than to ordinary vegetable flesh.

When a piece hits hot oil, the air inside expands and escapes, and the space it leaves fills with **oil immediately**.

And the process is very fast — it happens in the first few seconds, before the surface has even browned.

## Salting: it works, for two reasons

Salting is the best-known fix, and it genuinely works — but not for the reason most people think.

**First reason:** salt draws water out of the cells by osmosis. Cells that lose their water **shrink and draw closer together**, so the air pockets reduce — meaning less space for oil.

**Second reason:** salting changes the structure of the cell walls so they become less permeable to oil.

As for the **bitterness** salt is said to remove — that is overstated. Modern aubergine varieties are barely bitter to begin with, and salt reduces it only slightly; that is not its main role.

**The method:** cut the aubergine, salt it generously, and leave it in a colander for **30-45 minutes**, then rinse it and **dry it thoroughly** — because any remaining water will evaporate in the oil and make it spit.

## Pressing: an extra step that doubles the effect

After salting, put a weight on the slices (a plate with something heavy on it) for **15 minutes**.

Pressing expels more water and collapses the air pockets further than salting alone — and the difference in oil absorbed is clearly visible.

## Pre-heating: the strongest fix

This reduces oil more than anything else, and fewest people know it.

**The idea:** if the air pockets have **collapsed before** the piece touches oil, there is no space for the oil in the first place.

**The method:** roast the aubergine at **200°C for 15 minutes** with no oil at all, or microwave it for **5 minutes**.

The heat makes the cells collapse and draw together, and the piece shrinks. Fry it after that and it will absorb **a very small fraction** of the usual amount.

## Frying in very hot oil

Cold oil is the worst thing for aubergine — it absorbs before it browns.

Oil at **190°C** browns the surface quickly and forms a crust that reduces absorption.

And plenty of oil beats a little, which is counterintuitive: with too little oil the temperature drops sharply when the aubergine goes in, so it stays cool and absorption increases.

## The oven: the cleanest solution

Roasting gives a result very close to frying with a quarter of the oil or less.

**The method:** cut the aubergine, brush it with oil (**do not pour it on**), spread it on a tray **with gaps between the pieces**, and roast at **220°C for 25 minutes**, turning halfway.

Brushing distributes a small amount over the whole surface, whereas pouring lets some pieces drink all the oil.

## The difference between varieties

  - **Large globe aubergine:** more pockets so it absorbs more, and more seeds too.
  - **Small local aubergine:** denser and less absorbent, and better for frying.
  - **Long thin (Asian) aubergine:** the least absorbent and the most tender — best for a quick sauté.

The rule: **the smaller and denser it is, the less it absorbs**.

## Choosing aubergine at the market

A good aubergine feels **heavy for its size**, with shiny, taut skin and a fresh green stem.

A light aubergine has lost water and its pockets have widened — meaning it will absorb more oil.

And **a light press** should spring back. If the mark stays, it is old and its seeds will be hard and bitter.

## Storage

Aubergine is sensitive to deep cold — a very cold fridge pits the skin and softens the flesh.

**Best:** a cool spot outside the fridge if it will be eaten within two days, or the vegetable drawer for longer.

And **do not cut it before use** — the flesh oxidises and darkens within minutes. If you must, put the pieces in salted or acidulated water.

## The dishes that depend on it

Moussaka, makdous, baba ghanoush, ratatouille and vegetable bakes all need the oil handled correctly.

And **baba ghanoush is the exception**: its aubergine is charred over a flame rather than fried, so there is no oil problem at all. The only fat in it is the olive oil added at the end.

## Practical summary

If you are frying: **salt for 30 minutes, press, dry thoroughly, plenty of oil at 190°C**.

If you want as little oil as possible: **roast it for 15 minutes with no oil first, then fry** — that cuts the absorption to a quarter.

And if you want the cleanest solution: **the oven entirely, with the oil brushed on**.

## FAQ

### ليه الباذنجان بيشرب زيت أكتر من أي خضار؟
تركيبه إسفنجي مليان فراغات هوائية. لما ينزل الزيت الساخن، الهوا بيتمدّد ويخرج والزيت بياخد مكانه فورًا — والعملية دي بتحصل في أول ثواني قبل ما السطح يتحمّر.

### التمليح بيشيل المرارة ولا بيقلّل الزيت؟
الاتنين، بس الأهم هو الزيت. الملح بيسحب المية فالخلايا بتنكمش والفراغات بتقلّ. والمرارة مبالغ فيها — أصناف الباذنجان الحديثة مرارتها قليلة أصلاً.

### إيه أقوى حل يقلّل الزيت؟
التسخين المسبق: اشوي الباذنجان في الفرن ١٥ دقيقة على ٢٠٠ درجة من غير زيت (أو ٥ دقايق ميكروويف) قبل القلي. الفراغات بتنهار قبل ما يلمس الزيت فبيشرب ربع الكمية.

### أنهي نوع باذنجان بيشرب أقل؟
الأصغر والأكتف. الباذنجان الطويل الرفيّع أقلهم امتصاصًا، وبعده البلدي الصغير، والرومي الكبير أكترهم لأن فراغاته أكتر وبذره أكتر.

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Source: https://hanakoleah.com/en/article/why-does-aubergine-soak-up-so-much-oil
Edited by: Marwa Mohamed
Last updated: 2026-09-12