Ingredient

Lychee

The gap between a fresh lychee and a tinned one is wider than for almost any other fruit. Fresh, it is floral, perfumed and slightly resinous with a firm, grape-like snap. Tinned, it is sweet syrup with a soft texture and very little of the aroma left.

What the aroma is

Lychee smells of roses, and that is not a poetic reach — the fruit shares aromatic compounds with rose, including some of the same terpene alcohols. This is why rose and lychee is such a natural pairing and why lychee turns up in perfumery.

Those compounds are volatile, which is exactly why canning destroys them. Heat drives them off and the syrup replaces them with sugar.

Fresh lychees also lose aroma quickly after picking, which is why refrigerated fresh fruit flown in is markedly better than fruit that has sat at room temperature in a shop.

Choosing and keeping

Skin colour
Pink to red is good. Brown all over means old, and the aroma will have gone. Some browning at the stem is normal.
Firmness
Should give slightly under pressure but not be soft. Rock hard is under-ripe; squashy is fermenting.
Weight
Heavy for size. The stone varies in size between varieties and a small stone means more flesh.
Keeping
In the fridge in a bag, about a week. They dry out and brown quickly at room temperature.
Freezing
Whole and unpeeled, and they are excellent frozen — a sort of natural sorbet eaten half-thawed.

Peeling and stoning

  1. Nick the skin at the stem end with a thumbnail or a small knife.
  2. The shell is brittle and cracks readily. Peel it away in pieces; it comes off in seconds once started.
  3. Squeeze gently and the stone can often be pushed out at the stem end, leaving the fruit whole.
  4. Otherwise cut around the stone with a small knife and lift it out.
  5. Work over a bowl. Lychees release a lot of juice and it is worth keeping.

What to do with them

Lychee, rambutan and longan

Three closely related fruits sold side by side and constantly confused. The flesh is similar; the differences are real.

Lychee
Rough red-pink shell, sharply perfumed, the most floral of the three and the most acidic.
Rambutan
Hairy red shell, milder and sweeter, with flesh that clings more stubbornly to the stone.
Longan
Smooth tan shell, smaller, and the least perfumed — sweet and slightly musky rather than floral.
Interchangeable in a fruit salad
And not in a dessert built around the aroma, where only lychee carries it.
Tinned lychees
Sweet, soft and heavily perfumed by the syrup. Useful, and not the same fruit.
Dried longan
A different ingredient again — dark, raisin-like, and used in Chinese soups and tonics.

Common questions

Why do fresh lychees taste so different from tinned?

The aroma compounds are volatile and canning heat drives them off. What is left is sugar and texture.

My lychees have gone brown. Are they off?

Browning of the shell is mostly moisture loss and the fruit inside may be fine, but the aroma fades with it. Check the smell and texture.

What is the difference between a lychee, a longan and a rambutan?

All are related. Longans are smaller with a smooth brown shell and a milder flavour; rambutans have a hairy red shell and a firmer, less perfumed flesh.

Can I eat the stone?

No. Discard it.

Do they ripen after picking?

No. They only deteriorate, so buy the best-looking fruit you can and eat it soon.

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