A good lychee has bright pink to red skin, feels firm with a slight give when pressed, and smells faintly sweet, like roses. If you’re standing in a grocery store or farmers market trying to pick the best ones, those three quick checks will steer you right. But there’s more to know about what’s happening under that bumpy shell, how to spot fruit that’s already turning, and how to keep lychees fresh once you get them home.
What Good Lychee Looks Like
Fresh lychee skin ranges from pink to bright red, depending on the variety. The skin is rough and bumpy, almost wart-like in texture, and that’s completely normal. What you’re looking for is vibrant, even color without large dark patches, dry brittle spots, or visible mold. Some browning on the shell doesn’t automatically mean the fruit inside is bad, since lychee skin browns quickly when it dries out, but heavy browning usually signals the fruit is well past its peak.
Tan or dull-colored fruit is likely over the hill. If the skin looks shriveled, cracked, or feels mushy when you squeeze it gently, skip it. A good lychee feels firm but not rock-hard. There should be a little bounce to it, similar to a ripe grape. Fruit that feels soft or collapses under light pressure has started breaking down inside.
How It Should Smell and Taste
Fresh lychees give off a light, floral fragrance often compared to roses, with an underlying sweetness. That scent should be pleasant and mild. If you pick up a sour, fermented, or alcohol-like smell, the sugars inside have started to break down and the fruit is spoiling. This fermented odor is one of the most reliable warning signs, especially when you’re buying lychees in bulk and can’t inspect each one individually.
When you peel a good lychee, the flesh inside should be white to translucent, with a jelly-like consistency and a clean, sweet flavor. If the flesh looks gray, brown, or feels slimy, that fruit is done. Any off taste, bitterness, or sourness means it should be discarded.
Checking the Flesh and Seed
Peel back the shell by pinching and cracking it near the stem end. The skin should come away easily from the flesh underneath. Inside, you want to see plump, juicy, translucent-white fruit clinging to a single dark seed. The flesh should look glossy and feel slippery but not slimy. There’s a difference: fresh lychee has a clean, wet surface, while spoiling lychee develops a sticky or mucus-like coating.
If juice is leaking through the shell before you even peel it, the fruit has likely been crushed or is fermenting. Leaked juice on otherwise good lychees in the same container can cause mold growth, so check surrounding fruit carefully if you spot a leaker in the bunch. Dark spots or fuzzy patches on the flesh are clear signs of mold, and that fruit should be thrown away entirely rather than eaten around the damaged area.
Why Unripe Lychee Is Worth Avoiding
Lychees that are still green or only partially colored aren’t just unpleasant to eat. Unripe lychee fruit contains higher levels of naturally occurring toxins that interfere with your body’s ability to maintain normal blood sugar. In well-nourished adults eating a few fruit, this is not a practical concern. But the risk is real for young children, particularly those who are undernourished or haven’t eaten recently. Outbreaks of a serious condition called acute encephalopathy, involving seizures and dangerously low blood sugar, have been linked to children eating large amounts of unripe lychee on an empty stomach in growing regions.
The takeaway is straightforward: always choose fully ripe lychees with pink-to-red skin, and avoid eating green or partially ripe fruit.
How Long Lychees Stay Fresh
Lychees have a surprisingly short window at room temperature. Left on the counter at around 68°F (20°C), they’ll last only 3 to 5 days before the skin browns and the fruit deteriorates. Refrigeration extends that dramatically. Stored at 36 to 41°F (2 to 5°C) with high humidity, lychees can keep for 3 to 5 weeks.
The biggest enemy is dehydration. The shell browns rapidly when exposed to dry air, which is why lychees sold at room temperature often look worse than they taste. To slow browning at home, store them in a sealed plastic bag or airtight container in the refrigerator. This traps moisture around the fruit and keeps the skin looking red and fresh much longer. Don’t leave them sitting uncovered in the fridge, because the dry circulating air will brown the shells within a day or two, even though the inside may still be fine.
Quick Checklist at the Store
- Color: Pink to bright red, even and vibrant. Avoid green (unripe) or uniformly brown (old).
- Texture: Firm with slight give. Not hard, not squishy.
- Smell: Lightly floral and sweet. No sour, fermented, or chemical odors.
- Shell integrity: No cracks, no visible mold, no juice leaking through.
- Weight: Good lychees feel heavy for their size, which indicates the flesh inside is still juicy and hydrated.
If the shell has turned brown but there’s no off smell and the fruit still feels firm, it’s worth peeling one open to check. Brown skin often just means the lychee dried out a bit during transport, and the flesh inside can still be perfectly sweet and edible. But if the browning comes with softness, leaking, or a fermented smell, move on.