Tier 5 · Transform

TO GLAZE

Coating something in a reduced sugary liquid that thickens on its surface into a shining, clinging layer.

Why it works

A glaze works because sugar concentrates as water leaves, and concentrated sugar syrup is viscous and sticky. Applied to a hot surface, the remaining water flashes off and what is left clings rather than runs. The timing constraint is the whole technique: sugars begin to caramelise around 160°C and carbonise not far above, so a glaze applied at the start of a long cook is black long before the food is done. It goes on at the end, and usually in thin successive coats, because each coat dries and the next has something to grip. In a pan glaze — vegetables finished in butter, stock and sugar — the same thing happens in miniature as the liquid reduces to a syrup that coats each piece. Fat in the glaze keeps it glossy and stops it setting hard as it cools.

How to tell

• It coats the back of a spoon and a finger drawn through leaves a clean line that holds.
• The surface goes from wet-looking to genuinely shining, and stops running when the piece is tilted.
• Bubbles get larger and slower as the syrup thickens.
• In a pan, the liquid stops sloshing and starts moving as a mass with the vegetables.

When it goes wrong

Black, bitter patches.

Applied too early. Sugar carbonises well below roasting temperature, so a glaze needs the last few minutes, not the first hour.

The glaze ran off and pooled in the tray.

Too thin, or applied to a cold or wet surface. Reduce it further, and apply to something hot.

It set hard and cracked like toffee.

Reduced too far, or no fat in it. A little butter keeps a glaze pliable as it cools.

One thick coat that stayed sticky underneath.

Thin coats dry; thick ones insulate themselves. Two or three passes beat one heavy one.

Recovering it

A thin glaze is simply reduced further, which is the fix and the technique in one. Burnt glaze is bitter and should be scraped off if it is on the surface only. A glaze that has set too hard can be loosened with a spoonful of warm water and a little butter over low heat. None of these are difficult, which is why the only failure worth real caution is applying it too early.

Where to practise it

It carries to

Recipes using it

Generated from recipe step verbs and ingredient preparation forms. It is never authored, and it cannot drift from the recipes.