✦ Higher caffeine: ~120-150mg per mug
✦ More chlorogenic acid polyphenols
✦ More bitter flavour profile
✦ Almost calorie-free black
Strong black filter coffee has a higher caffeine content than average-strength coffee (typically 120-150mg per 200ml), more chlorogenic acid polyphenols, and a more bitter, robust flavour from increased extraction of coffee solids. Its health associations are similar to average-strength coffee but the higher caffeine requires more attention for sensitive individuals.
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Preparation note
Strong coffee is not recommended for those sensitive to caffeine, pregnant women (UK limit 200mg caffeine/day), or those with anxiety or sleep problems. Drink before 2pm to minimise impact on sleep quality.
Sources:
NHS Caffeine in pregnancy · CoFID 2021
Where Coffee, infusion, strong Stands Out
Macronutrients per 100g
8.00
kJ
Energy
0.20
g
Protein
0.30
g
Carbs
0.00
g
Fibre
0.00
g
Sugars
0.00
g
Salt
Vitamins & Minerals
| Nutrient | Per 100g | % Daily Value* | Level |
|---|---|---|---|
| Potassium | 120 mg | 6% | |
| Magnesium | 10.0 mg | 3% | |
| Phosphorus | 8.00 mg | 1% | |
| Chloride | 3.00 mg | 0% | |
| Calcium | 3.00 mg | 0% | |
| Niacin (B3) | 0.900 mg | 6% | |
| Iron | 0.100 mg | 1% | |
| Zinc | 0.100 mg | 1% | |
| Manganese | 0.070 mg | 4% | |
| Copper | 0.010 mg | 1% | |
| Riboflavin (B2) | 0.010 mg | 1% | |
| Vitamin D | 0.000 µg | 0% | |
| Vitamin A (RAE) | 0.000 µg | 0% | |
| Vitamin B12 | 0.000 µg | 0% | |
| Vitamin C | 0.000 mg | 0% | |
| Sucrose | 0.000 g | — | |
| Fructose | 0.000 g | — | |
| Glucose (dextrose) | 0.000 g | — | |
| Cholesterol | 0.000 mg | — | |
| Beta-carotene | 0.000 µg | — | |
| Biotin (Vitamin B7) | 3.00 µg | 6% | |
| Retinol (vitamin A) | 0.000 µg | 0% |
Sources:
NHS Caffeine in pregnancy; CoFID 2021