Group · Seafood
Langoustine
The langoustine is a crustacean of sandy Atlantic seabeds, caught mainly off Scotland and in the Bay of Biscay. It is neither a small spiny lobster nor a large prawn: it is a species in its own right, a cousin of the lobster.
In terms of nutrition facts, raw: 89.8 kcal per 100 g for 19.1 g of protein and 0.79 g of fat. It provides 141 µg of iodine, 55 µg of selenium (exactly the reference intake), 505 mg of potassium, 3.4 mg of zinc and 2.92 mg of iron per 100 g, with 0.72 g of salt.
Macronutrient breakdown
Nutrition table per 100 g
| Calories | 90 kcal |
| Kilojoules | 381 kJ |
| Protein | 19,1 g |
| Carbohydrate | 1,6 g |
| Fat | 0,8 g |
Micronutrients per 100 g
All measured nutrients, ranked by share of the daily reference intake.
- Selenium55 µg100 %
- Iodine141 µg94 %
- EPA0,18 g72 %
- Copper0,55 mg55 %
- Vitamin B120,9 µg36 %
- Zinc3,4 mg34 %
- DHA0,09 g34 %
- Potassium505 mg25 %
See the other 16 nutrients
- Vitamin B51,5 mg25 %
- Iron2,92 mg21 %
- Phosphorus144 mg21 %
- Vitamin B60,21 mg15 %
- Vitamin E1,5 mg13 %
- Vitamin B32 mg13 %
- Vitamin B10,13 mg12 %
- Magnesium43,3 mg12 %
- Total omega-30,29 g11 %
- Vitamin B917 µg9 %
- Calcium41,5 mg5 %
- Vitamin C3 mg4 %
- Manganese0,07 mg4 %
- Omega-3 ALA0,02 g1 %
- Vitamin B20,01 mg1 %
- Omega-6 LA0,03 g0 %
Anses Ciqual 2025. Source: Anses, 2025, Ciqual food composition table
Tips
55 µg of selenium: one portion covers the day’s need. With 141 µg of iodine, or 94% of the reference intake, its trace element profile is remarkable.
19.1 g of protein for 0.79 g of fat. An excellent ratio, on a par with the best white fish. What weighs down a langoustine always comes afterwards: butter, mayonnaise, frying.
Three minutes of cooking, no more. In a gently simmering court-bouillon or on a grill. Beyond that, the flesh turns mealy and loses its juice: this is a crustacean that does not forgive.
Keep the heads and shells. Sautéed and then covered with liquid, they make a bisque whose power is out of proportion to the effort. Otherwise you throw away half the product.
Major allergen. Crustaceans are among the fourteen allergens that must be declared, and reactions can be severe. Worth flagging when cooking for others.
