A Page from the Kook’s Notebook – Page 14

The Anatomy of an Onion

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The Anatomy of an Onion

Notes from the stove.

Few ingredients begin more dishes than the onion.

It’s the quiet starting point of countless recipes.

Soups.
Sauces.
Stews.
Roasts.

Chopped and heated gently, the onion slowly transforms.

Sharpness softens.

Sweetness appears.

But like many ingredients, an onion is more than it first seems.

Inside those layers are several parts, each behaving slightly differently in the kitchen.

The Skin

The dry papery outer skin protects the onion.

Most cooks remove it without thinking.

But it still carries value.

Onion skins add colour and flavour to:

• stocks
• broths
• slow braises

In some kitchens they are even used to create natural colouring for sauces.

The Outer Layers

The outer flesh is firm and slightly stronger in flavour.

These layers work well when:

• caramelised slowly
• roasted
• grilled

Their structure holds up to longer cooking.

The Inner Layers

Closer to the centre the onion becomes more tender.

These layers are ideal for:

• sautéing
• sweating for sauces
• softening into soups

They cook more quickly and melt beautifully into dishes.

The Core

At the centre sits the root core.

It holds the onion together during slicing.

Some cooks remove it for very fine preparations, but it often simply cooks along with the rest of the onion.

In stocks and braises, it contributes flavour like everything else.

How It Appears on Modern Menus

Even today onions appear in deceptively simple dishes.

Menus might read:

• roasted onion, thyme, butter
• grilled onions, olive oil, sea salt
• caramelised onion, sourdough
• onion broth, herbs

Simple ingredients.

Remarkable depth.

What Home Cooks Can Learn

Onions teach patience.

Cooked slowly they become sweet and complex.

Cooked quickly they remain sharp and bright.

The technique changes the flavour.

Few ingredients demonstrate transformation so clearly.

Chef’s Notebook

The onion might be the quietest ingredient in the kitchen.

But it starts more dishes than almost any other.

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