Yaki Nasu — Japanese Grilled Eggplant
Yaki nasu (焼きなす) is grilled eggplant, and that’s genuinely the whole recipe. You char a whole eggplant until the skin blisters and the inside collapses into something silky, peel the skin off, cut it up, and top it with bonito flakes and a splash of sauce. No oil, no seasoning while it cooks, nothing added. It’s one of those Japanese summer side dishes that tastes far better than the effort suggests.
I made this from the classic Kikkoman method, which finishes it with grated ginger and soy sauce. I went with bonito flakes and a bottle of apple-vinegar ponzu we had open instead — that’s what was in our fridge, and honestly the citrusy version is what I reach for more often. I also cooked it in our fish grill, the little broiler drawer built into every Japanese stove, which is the standard way to do this at home in Japan. If you don’t have one, an oven broiler or a gas burner works fine, and I’ve written out both below.
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Why You’ll Love This Recipe
- Two ingredients, really. Eggplant and something to pour over it. That’s the dish.
- Silky, smoky texture. Grilling whole collapses the flesh into something almost custardy, with a light smokiness you can’t get from frying.
- No oil at all. Eggplant normally drinks oil. This method uses none, so it’s light and clean-tasting.
- Good hot or cold. Great straight off the grill, and even better chilled in the fridge on a hot day.
What is Yaki Nasu?
Yaki (焼き) means grilled or seared, and nasu (なす) is eggplant — so yaki nasu is simply “grilled eggplant.” It’s a summer staple in Japanese homes, served as a small cold side dish alongside rice, or as an appetizer with a beer. The eggplant is grilled whole and unpeeled, so the skin protects the flesh while it steams in its own moisture, then the blackened skin is peeled away and thrown out.
What makes it different from Western grilled eggplant is that nothing is added during cooking. No oil, no salt, no marinade — the eggplant is cooked plain and seasoned only at the table. The result is much cleaner and lighter than roasted eggplant, and the texture is soft all the way through rather than browned on the outside. If you like eggplant treated this way, my nasu no yakibitashi takes the opposite approach — pan-fried in oil, then soaked in a dashi broth.
Which Eggplant to Use
Japanese eggplant — the long, slim, thin-skinned kind — is what this dish is built around. It cooks through quickly, the skin peels off cleanly, and the flesh is sweeter and less seedy than a big globe eggplant. Chinese eggplant is longer and paler but works almost identically. A large globe eggplant will work too, but it takes considerably longer to cook through and the skin is tougher to peel, so slit it and give it extra time.
Ingredients (Serves 2)
| Ingredient | Amount | Notes |
|---|---|---|
| Japanese eggplant | 2–4 | Whole, stems left on |
| Bonito flakes (katsuobushi) | A generous pinch | To finish |
| Ponzu | To taste | Or soy sauce — see below |
| Grated ginger | To taste | Optional, classic with soy sauce |
The topping is the only real decision here. The classic Kikkoman version is Japanese soy sauce with a mound of grated ginger, which is sharp and savory. I used ponzu instead — a citrus-based soy sauce that’s brighter and a little tart, and my preference with eggplant. Mine was a regional apple-vinegar bottle, but Kikkoman ponzu on Amazon is the easy one to find abroad and does the same job. Either way you want katsuobushi (bonito flakes) on top; they melt into the warm eggplant and add the smoky, savory backbone that makes the dish taste finished rather than plain.
How to Make Yaki Nasu
Step 1: Prick the Skin
Leave the stem on and pierce the skin all over with a bamboo skewer or a fork — about ten holes per eggplant. This matters: an unpricked eggplant traps steam and can burst in the grill. Don’t peel or cut it. The skin is a wrapper, and it goes in the trash later.
Step 2: Grill It Whole
Lay the eggplant on the rack of a fish grill and cook for about 5 minutes, then turn it over and give it another 3 minutes or so. You’re looking for skin that’s blackened and wrinkled and flesh that gives completely when you press it — if there’s any firmness left in the middle, keep going. Timings vary a lot by eggplant size, so go by feel rather than the clock.
No fish grill? Set your oven broiler to high and put the eggplant on a rack in the upper third, turning every few minutes, for around 10–15 minutes. Or hold it directly over a gas burner flame with tongs, rotating until the whole surface is charred — that gives the most smoke flavor and is closest to grilling over charcoal. A hot outdoor grill works too. Whichever way you go, cook it until it’s fully collapsed.
Step 3: Peel Off the Skin
While it’s still hot, slide a skewer or the back of a knife between the skin and the flesh and pull the skin away in strips. It should come off easily — if it fights you, the eggplant is underdone. It’s hot, so I hold the stem end with a folded paper towel while I work down the length of it. Some cooks dunk it in cold water first to cool it, but that waters down the flavor, so I put up with the heat instead.
Step 4: Cut and Serve
Trim off the stem and cut the eggplant into bite-size pieces, or tear it lengthwise into strips with your fingers — the flesh separates naturally into fibers. Pile it into a small bowl, heap the bonito flakes on top, and pour over ponzu or soy sauce just before eating. Add grated ginger if you’re going the soy sauce route.
Tips and Variations
- Cook it longer than feels right. Undercooked yaki nasu is the most common failure — the skin won’t peel and the middle is spongy instead of silky.
- Peel it hot. The skin comes away easily while the eggplant is steaming. Once it cools, it clings.
- Serve it chilled. Peel it, chill it in the fridge for an hour, then dress it. In summer this is how we usually eat it.
- Ginger and soy, the classic way. A mound of freshly grated ginger with soy sauce is the traditional finish and worth trying at least once.
- Other toppings. Chopped green onion, grated daikon, a drizzle of sesame oil, or a spoonful of miso all work.
- Don’t salt it beforehand. Unlike fried eggplant, there’s no need to salt and drain. Grilling whole handles the moisture on its own.
What to Serve It With
- As one small dish in a rice-and-soup meal, with miso soup and a bowl of rice.
- Next to something rich and grilled — it cuts through the fat nicely alongside a bowl of yakiniku don.
- As a cold appetizer with a beer, which is how it usually shows up on our table in August.
- With another summer vegetable side like tataki kyuri with ume for an easy two-dish spread.
Storing
Peel the eggplant first, then store it undressed in a sealed container in the fridge for up to 3 days — it holds up well and is genuinely good cold. Add the bonito flakes and sauce only when you serve, since the flakes go soggy and the eggplant leaks water once it’s dressed. If liquid pools in the container, pour it off before serving. I wouldn’t freeze it; the texture turns watery and stringy on thawing.
Frequently Asked Questions
What does yaki nasu mean?
It’s Japanese for “grilled eggplant” — yaki (grilled) plus nasu (eggplant). It refers specifically to eggplant grilled whole with the skin on, then peeled and served cold or warm with a savory topping, rather than eggplant that’s been sliced and grilled.
Can I eat the skin?
Not in this dish. Japanese eggplant skin is perfectly edible in general, but here it gets deliberately charred to protect and flavor the flesh, so it comes out bitter and papery. Peel it off and discard it.
Can I make yaki nasu without a grill?
Yes. An oven broiler on high for 10–15 minutes, turning a few times, is the easiest substitute. Holding the eggplant over a gas burner flame with tongs gives the smokiest result. A toaster oven or an air fryer at high heat also works — you’ll get less char but the same soft texture.
What’s the difference between Japanese and Chinese eggplant?
Japanese eggplant is short and deep purple-black; Chinese eggplant is longer and light lavender. Both have thin skin, few seeds, and tender flesh, and both work well here. The globe eggplant sold in most American supermarkets is the outlier — thicker skinned and seedier, so it needs longer cooking.
Yaki Nasu (Japanese Grilled Eggplant)
Ingredients
Method
- Leave the stems on and pierce each eggplant all over with a bamboo skewer or fork, about 10 holes each, so they don’t burst.
- Grill the eggplant whole on the rack of a fish grill for about 5 minutes, turn, and grill another 3 minutes, until the skin is blackened and wrinkled and the flesh gives completely when pressed. No fish grill: broil on high for 10-15 minutes turning a few times, or char over a gas burner flame with tongs.
- While still hot, slide a skewer or the back of a knife between the skin and flesh and pull the skin away in strips. Discard the skin. Hold the stem with a folded paper towel if it’s too hot.
- Trim off the stem and cut the eggplant into bite-size pieces, or tear it lengthwise into strips.
- Pile into a small bowl, top with bonito flakes, and pour over ponzu or soy sauce just before eating. Add grated ginger if using soy sauce. Good warm, or chilled in the fridge for an hour.
