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Shelf-stable, dry sailor's biscuit
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
2 piece (medium) of Hardtack (56 g) has 208 calories. That works out to 371 calories per 100 g. It contains 43.5 g of carbs, 6.3 g of protein, 0.8 g of fat and 1.7 g of fiber. Its 17.4 µg of Selenium covers 32% of the Daily Value. Its glycemic index is 70 (high), so it raises blood sugar quickly.
Selected: 2 piece (medium) · 56 g
208
KCAL / 56G
Carbs
43.5g
· 16% DV
Protein
6.3g
· 13% DV
Fat
0.8g
· 1% DV
Fiber
1.7g
· 6% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 84% · Protein 12% · Fat 4%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 208 kcal | |
| Total fat | 0.8 g | 1% |
| Saturated fat | 0.16 g | 1% |
| Trans fat | 0 g | |
| Sodium | 364 mg | 16% |
| Total carbohydrate | 43.5 g | 16% |
| Fiber | 1.7 g | 6% |
| Protein | 6.3 g | 13% |
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 |
|---|---|---|
| 2 piece (medium) | 56 g | 208 kcal |
| 1 piece (small) | 28 g | 104 kcal |
| 1 serving (medium) | 56 g | 208 kcal |
| 3 piece (large) | 84 g | 312 kcal |
| 1 serving (large) | 84 g | 312 kcal |
| 100 g | 100 g | 371 kcal |
| 1 pack (medium) | 100 g | 371 kcal |
| 4 piece (extra large) | 112 g | 416 kcal |
Calculated from 371 calories per 100 g.
Hardtack is a very dry, hard biscuit traditionally made from flour and water, sometimes with salt. Its low moisture content helped it keep during long voyages when fresh bread was unavailable.
Traditional hardtack is made from flour and water, with salt sometimes added. The dough is baked and dried thoroughly, producing a plain, dense biscuit rather than a soft loaf.
Properly dried hardtack can keep for a long time if it stays dry and is stored in an airtight container. Moisture can lead to mold, so discard it if it becomes damp or develops an unusual smell.
You can eat hardtack plain, but it is often easier to chew after soaking it in soup, coffee, or another liquid. Breaking it into small pieces first also makes it easier to handle.
Soak hardtack briefly in a drink or soup to soften it. For a warm meal, add pieces to broth and let them sit until they are easier to bite; leaving them too long can make them fall apart.
Hardtack was useful on ships because it was dry, compact, and less likely to spoil quickly than fresh bread. Sailors could carry it on long voyages and soften it in liquid before eating.
Hardtack is baked and dried to remove most of its moisture, which helps it keep but makes it tough to bite. Its firmness is a feature of the traditional recipe, not a sign that it is stale.
Yes. Mix flour with enough water to form a firm dough, add salt if desired, shape it into flat pieces, and bake until thoroughly dry. Cool it completely before storing it in an airtight container.
No. Hardtack is generally much thicker, drier, and harder than an ordinary cracker, and traditional recipes use very few ingredients. Crackers are usually made to be crisp and ready to eat without soaking.
Sailors dipped hardtack in coffee to make the dry biscuit softer and easier to chew. The liquid also made a plain ration more practical to eat during a voyage.
Vitamins
B1
0.24mg · 20% DV
B3
2.74mg · 17% DV
Folate
66.08µg · 17% DV
B2
0.13mg · 10% DV
Minerals
Selenium
17µg · 31% DV
Manganese
0.4mg · 17% DV
Sodium
364mg · 16% DV
Iron
2.58mg · 14% DV
Potassium ⭐
73mg · 2% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 208 calories in 2 piece (medium) (56 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.
Hardtack is a firm, very dry biscuit made mainly from flour and water, baked to keep well without the softness of fresh bread. It is best known as a practical ship’s biscuit, carried on long voyages because it is compact and shelf-stable.
Its hard, crisp texture makes it easy to pack, though it can be tough to bite. It may be eaten plain or softened in soup, stew or a hot drink; in places where it is less familiar, it also works as a simple base for cheese or other toppings. Hardtack is mostly carbohydrate, with little fat. If you prefer a softer bite, let it soak briefly before eating.
Low
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 3
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
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
— Not suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
— Not suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
SATURATED
0.16g
MONOUNSATURATED
0.11g
POLYUNSATURATED
0.29g
Omega 6:3 ratio 13.5:1
Above the ideal 4:1 (13.5:1).
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Nutrition data compiled from USDA FoodData Central and scientific sources.