Oysters on the half shell
| Macros | per 100 g |
|---|---|
| Calories | 68 kcal |
| Protein | 7.0 g |
| Fat | 2.5 g |
| Carbs | 3.5 g |
Oysters on the half shell are raw, freshly shucked oysters served in their bottom shell, typically with lemon, mignonette or hot sauce. They are a classic appetiser in coastal cuisines worldwide, usually eaten in portions of six to twelve pieces. Per 100 g, raw oysters provide 68 kcal, 7 g of protein, 2.5 g of fat and 3.5 g of carbohydrates, with virtually no fibre and only 0.5 g of sugars — a lean, low-carbohydrate profile. Notable micronutrients include 210 mg of sodium, 170 mg of potassium, 60 mg of calcium, 14 mcg of vitamin B12 and 30 mcg of vitamin A per 100 g. No glycemic index data is available for this food. Oysters on the half shell are compatible with pescatarian, gluten-free, dairy-free, paleo, keto and low-FODMAP dietary patterns.
How many calories in oysters on the half shell?
Raw oysters on the half shell contain 68 kcal per 100 g. A single medium oyster weighs roughly 15–20 g, so a typical six-oyster serving comes to around 60–80 kcal total.
How much vitamin B12 is in oysters?
Oysters on the half shell contain 14 mcg of vitamin B12 per 100 g, which is exceptionally high for a whole food. The adult daily reference intake for vitamin B12 is around 2.4 mcg, so even a small serving covers that amount many times over.
Are oysters on the half shell keto-friendly?
Yes, oysters on the half shell are listed as keto-compatible. At 3.5 g of carbohydrates per 100 g and with a high protein-to-calorie ratio, they fit comfortably within a low-carbohydrate eating pattern.
Diets
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Macros · per 100 g
| Macros | Amount |
|---|---|
| Calories | 68.0 kcal |
| Protein | 7.0 g |
| Fat | 2.5 g |
| Carbs | 3.5 g |
| Sugars | 0.50 g |
| Fiber | 0 g |
| Fats breakdown | Amount |
|---|---|
| Saturated | 0.60 g |
| Monounsaturated | 0.40 g |
| Polyunsaturated | 0.80 g |
| Cholesterol | 55.0 mg |
| Minerals | Amount |
|---|---|
| Calcium | 60.0 mg |
| Iron | 5.5 mg |
| Potassium | 170 mg |
| Sodium | 210 mg |
| Vitamins | Amount |
|---|---|
| Vitamin A | 30.0 mcg |
| Vitamin C | 4.0 mg |
| Vitamin B12 | 14.0 mcg |