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Rich in protein and omega-3
In season: Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 serving (medium) of Baked bonito with onion (180 g) has 319 calories. That works out to 177 calories per 100 g. It contains 4.3 g of carbs, 42.1 g of protein, 14.8 g of fat and 0.9 g of fiber. Its 15.1 µg of B12 covers 630% of the Daily Value. Its glycemic index is 10 (low), so it raises blood sugar slowly.
Selected: 1 serving (medium) · 180 g
319
KCAL / 180G
Carbs
4.3g
· 2% DV
Protein
42.1g
· 84% DV
Fat
14.8g
· 19% DV
Fiber
0.9g
· 3% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 5% · Protein 53% · Fat 42%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 319 kcal | |
| Total fat | 14.8 g | 19% |
| Saturated fat | 3.69 g | 18% |
| Trans fat | 0 g | |
| Sodium | 133 mg | 6% |
| Total carbohydrate | 4.3 g | 2% |
| Fiber | 0.9 g | 3% |
| Protein | 42.1 g | 84% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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| Serving | Amount | Calories |
|---|---|---|
| 1 serving (medium) | 180 g | 319 kcal |
| 1 piece (small) | 90 g | 159 kcal |
| 100 g | 100 g | 177 kcal |
| 1 piece (medium) | 140 g | 248 kcal |
| 1 cup (chopped) | 150 g | 266 kcal |
| 1 piece (large) | 220 g | 389 kcal |
| 1 serving (large) | 280 g | 496 kcal |
Calculated from 177 calories per 100 g.
Baked bonito with onion is made by roasting bonito portions over sliced onion with olive oil, lemon, and seasoning. Spread the onion in a baking dish, add the fish, and cook until the flesh turns opaque and flakes easily.
Bake bonito with onion at about 400°F (200°C) for roughly 20–25 minutes when using thick slices. The exact time varies with the thickness and your oven, so check that the centre is opaque and flakes easily.
Keep baked bonito with onion moist by avoiding overcooking and leaving the onion and a little olive oil or liquid in the dish. Thicker portions tend to stay juicier; take the fish out as soon as it flakes easily.
Bonito in baked bonito with onion has a savoury, rich flavour and a firm texture, often compared with tuna but typically more pronounced. The sweet, softened onion and lemon balance the fish’s robust taste.
Either fresh or frozen fish works for baked bonito with onion. Thaw frozen bonito fully in the refrigerator first, discard any thawing liquid, and pat it dry so the fish roasts rather than steams in the dish.
Slice the onions into rings or thin half-moons for baked bonito with onion. Spread them beneath and around the fish so they soften in the cooking juices; thicker slices hold their shape, while thin ones become more tender.
Serve baked bonito with onion with a crisp green salad, lemon, or roasted potatoes. Rice or crusty bread also pairs well and makes use of the savoury onion juices left in the baking dish.
Baked bonito with onion is done when the thickest part is opaque and separates into flakes with gentle pressure from a fork. If the centre still looks translucent, return it to the oven briefly and check again.
Baked bonito with onion keeps refrigerated in a sealed container for about three to four days. Refrigerate it within two hours of cooking, and reheat only the portion you plan to eat until it is thoroughly hot.
Yes, you can assemble baked bonito with onion shortly before cooking, but keep the uncooked fish covered in the refrigerator rather than leaving it at room temperature. For the best texture, bake it close to serving time.
Vitamins
B12
15.12µg · 630% DV
B3
19.44mg · 122% DV
B6
0.86mg · 51% DV
Vitamin D
8.1µg · 41% DV
Minerals
Selenium
77µg · 140% DV
Phosphorus
446mg · 64% DV
Iodine
68µg · 45% DV
Copper
0.18mg · 20% DV
Potassium ⭐
670mg · 20% DV
Sodium
133mg · 6% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 319 calories in 1 serving (medium) (180 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
Baked bonito with onion is a simple Turkish-style fish dish, made by roasting bonito with sliced onion until the fish is tender and the onion softens around it. It is a practical way to cook seasonal bonito, whose firm flesh holds up well in the oven and has a fuller flavour than many mild white fish.
Serve it hot with lemon and a crisp salad, or alongside bread to catch the juices. The onion adds sweetness without overwhelming the fish. Bonito provides plenty of protein and omega-3, while the dish is relatively low in carbohydrate. For a lighter plate, use only a little oil and pair it with vegetables rather than heavier sides.
High
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Medium
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
NOVA 2
Minimally Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Contains these allergens:
Vegan
— Not suitable
Vegetarian
— Not suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
✓ Suitable
Low FODMAP
— Not suitable
SATURATED
3.69g
MONOUNSATURATED
4.95g
POLYUNSATURATED
3.15g
Omega 6:3 ratio 0.2:1
Below the ideal 4:1 — a good omega balance.
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Nutrition data compiled from USDA FoodData Central and scientific sources.