✦ Fortified wine: 19-22% ABV
✦ ~1 unit per 50ml measure
✦ Residual grape sugars
✦ Polyphenols from grape skins
Port is a fortified Portuguese wine (typically 19-22% ABV) made from grape varieties of the Douro Valley, with fermentation stopped mid-process by adding grape spirit, leaving residual natural sugars. A standard 50ml measure contains around 1 unit and 75-90 kcal. It provides small amounts of polyphenols from the grape skin contact during fermentation. Ruby and vintage ports have more polyphenols than tawny.
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Preparation note
A 50ml port is a standard measure equivalent to one unit; as a dessert wine the small serving size naturally limits intake. Ruby port has more antioxidant polyphenols than tawny, which is oxidised during ageing.
Sources:
NHS Alcohol units · CoFID 2021
Where Port Stands Out
Macronutrients per 100g
655
kJ
Energy
0.10
g
Protein
12.0
g
Carbs
0.00
g
Fibre
0.00
g
Fat
12.0
g
Sugars
0.00
g
Saturates
0.01
g
Salt
Vitamins & Minerals
| Nutrient | Per 100g | % Daily Value* | Level |
|---|---|---|---|
| Potassium | 97.0 mg | 5% | |
| Phosphorus | 12.0 mg | 2% | |
| Magnesium | 11.0 mg | 3% | |
| Chloride | 8.00 mg | 1% | |
| Calcium | 4.00 mg | 1% | |
| Iron | 0.400 mg | 3% | |
| Niacin (B3) | 0.100 mg | 1% | |
| Copper | 0.100 mg | 10% | |
| Vitamin B6 | 0.010 mg | 1% | |
| Riboflavin (B2) | 0.010 mg | 1% | |
| Vitamin E (alpha-TE) | 0.000 mg | 0% | |
| Vitamin C | 0.000 mg | 0% | |
| Vitamin A (RAE) | 0.000 µg | 0% | |
| Vitamin D | 0.000 µg | 0% | |
| Trans fat | 0.000 g | — | |
| Monounsaturated fat | 0.000 g | — | |
| Polyunsaturated fat (PUFA) | 0.000 g | — | |
| Glucose (dextrose) | 4.60 g | — | |
| Fructose | 4.60 g | — | |
| Sucrose | 2.80 g | — | |
| Cholesterol | 0.000 mg | — | |
| Retinol (vitamin A) | 0.000 µg | 0% |
Sources:
NHS Alcohol units; CoFID 2021