The line on the bottom of an eggplant is its blossom scar, sometimes called the “belly button.” It’s the mark left where the flower was once attached. This scar can be either a thin, oval slit or a rounder, more circular shape. A popular kitchen tradition claims this difference tells you whether an eggplant is “male” or “female,” with the line-shaped scar supposedly indicating fewer seeds and better flavor. The idea is widespread, but the biology behind it is more interesting than the myth.
The “Male” and “Female” Eggplant Myth
Walk through enough cooking forums or watch enough recipe videos and you’ll encounter a confident tip: eggplants with an oval, slit-like dimple on the bottom are “female,” while those with a round dimple are “male.” The round ones are said to contain more seeds and taste more bitter, so the advice is to always pick the one with the elongated line.
This idea has been circulating for decades, but it’s not scientifically accurate. Eggplants don’t have a sex. Like tomatoes, cucumbers, peppers, and squash, an eggplant is a fruit produced by a flower. The flowers on an eggplant plant contain both male and female reproductive parts, and the fruit grows after cross-pollination. As agricultural experts at the University of Illinois Extension have pointed out, fruits are the product of sex, but they don’t have one themselves. Calling an eggplant “male” or “female” is like calling an apple male or female. It doesn’t apply.
What the Scar Shape Actually Tells You
So if there’s no gender involved, does the shape of the blossom scar mean anything at all? Many experienced cooks insist it does, at least as a rough indicator. Eggplants with a rounder, deeper dimple do tend to have more seeds in the center, while those with a narrow, oval slit tend to be meatier with fewer seeds. This isn’t because of any gender difference. It likely reflects pollination conditions, growing environment, and the stage of maturity when the fruit was picked.
Seeds are the main source of bitterness in eggplant. The plant produces bitter compounds in and around its seeds as a natural defense against animals that would eat them. So an eggplant packed with large, developed seeds will generally taste more bitter than one with fewer, smaller seeds. If you’ve ever cut into an eggplant and found a dense cluster of dark, hard seeds in the center, you know the difference.
Choosing the oval-dimpled eggplant over the round-dimpled one is a reasonable kitchen shortcut, even if the reasoning behind it (gender) is wrong. It won’t guarantee a less seedy eggplant every time, but many cooks find it a helpful first filter.
Better Ways to Pick a Good Eggplant
The blossom scar is just one thing to look at. Several other traits are more reliable indicators of quality and flavor.
- Size and maturity: Smaller, younger eggplants almost always have fewer seeds and less bitterness than large, fully mature ones. Full-size puffy eggplants are more likely to contain hard, developed seeds.
- Skin color: Look for a glossy, deep purple skin. Once the exterior turns dull or starts looking matte, the eggplant is over-mature and more likely to be bitter and spongy inside.
- Firmness: A good eggplant feels firm and smooth, with no soft spots or brown patches. It should feel heavy for its size, which signals dense, meaty flesh rather than a hollow, seed-filled interior.
- The press test: Gently press the skin with your thumb. If it springs back, the eggplant is fresh. If the indentation stays, it’s past its prime.
These checks will do more for your cooking than the dimple shape alone. A small, glossy, firm eggplant with a round scar will almost certainly taste better than a large, dull, spongy one with an oval scar.
Why This Myth Sticks Around
The “male vs. female” eggplant story persists because it’s simple, memorable, and partly useful. There is a real observable difference in the blossom scar shape, and there is a loose correlation with seed content. Wrapping that observation in a gender story makes it easy to remember at the grocery store. It gets passed from parent to child, shared in cooking groups, and repeated in videos because it feels like insider knowledge.
The truth is less tidy but more helpful: no single feature tells the whole story. The blossom scar, the size, the skin sheen, and the firmness all work together. If you want to minimize bitterness, go smaller, go glossy, go firm, and yes, lean toward the oval dimple if you’re choosing between two otherwise identical eggplants.