Sweet Potato Wine
Although sweet potato wine is less common than carrot or parsnip wine in traditional British homebrewing, it has become increasingly popular with modern country winemakers. Its naturally sweet, dense flesh produces a wine with excellent body and a smooth mouthfeel. Unlike ordinary potatoes, sweet potatoes contribute subtle honeyed and fruity notes that become more pronounced during bottle aging. Many homebrewers compare a well-aged sweet potato wine to a lightly oaked white wine with hints of dried fruit and vanilla.
At a glance
About this wine
Although sweet potato wine is less common than carrot or parsnip wine in traditional British homebrewing, it has become increasingly popular with modern country winemakers. Its naturally sweet, dense flesh produces a wine with excellent body and a smooth mouthfeel.
Unlike ordinary potatoes, sweet potatoes contribute subtle honeyed and fruity notes that become more pronounced during bottle aging. Many homebrewers compare a well-aged sweet potato wine to a lightly oaked white wine with hints of dried fruit and vanilla.
Ingredients
- 5.0–6.0 lb (2.3–2.7 kg) sweet potatoes
- 2.0–2.25 lb (900 g–1.0 kg) white sugar
- Water (to make up to 1 UK gallon (4.5 L) total volume)
- Juice of 2 lemons (or 2 tsp acid blend)
- 1 tsp yeast nutrient
- ½ tsp pectic enzyme
- 1 Campden tablet (optional)
Wine yeast (half packet recommended)
- Lalvin D47 (excellent body and richness)
- Lalvin 71B (enhances fruit character)
- EC-1118 (clean, dependable fermentation)
Optional Ingredients
- 150 g raisins (traditional body enhancer)
- Half a vanilla pod
- Small piece of fresh ginger
- ½ tsp wine tannin
- 1 tsp glycerine after fermentation
Equipment
- The following equipment is recommended to make this 1 Gallon.
- Sanitising fluid,
- 2 gallon Fermenting bucket,
- Demijohn,
- Hydrometer,
- Syphon tube,
- Air lock,
- Rubber bung,
- Measuring cups,
- Muslin bag,
- Thermometer,
- Extra long stirring spoon,
- Kitchen scales,
- Campden tablets
Preparation
- Wash the sweet potatoes thoroughly.
- Peel them and remove any damaged areas.
- Cut into small cubes.
- Steam or simmer gently for 30–40 minutes, until soft but not falling apart.
- Steaming generally preserves more flavour than boiling.
- Reserve any cooking liquor for the must.
Method
- Transfer the cooked sweet potatoes and cooking liquor into a sanitised fermentation bucket.
- Dissolve the sugar into the hot liquid.
- Add the lemon juice (or acid blend).
- Top up with cool water to reach 1 UK gallon (4.5 L).
- Allow the must to cool below 25°C (77°F).
- Add: Pectic enzyme Yeast nutrient Crushed Campden tablet (if using)
- Cover and leave for 24 hours if Campden was added.
- Add the yeast and stir thoroughly.
- Strain out the sweet potato pieces.
- Allow them to drain naturally.
- Siphon into a sterilised demijohn.
- Fit an airlock.
- Top up with cooled boiled water if required.
Fermentation notes
Primary Fermentation
Ferment with the sweet potato pieces for 5–7 days.
Stir once daily.
Keep the vegetable submerged beneath the liquid.
Maintain a temperature of 18–22°C.
A pleasant honey-like aroma often develops during primary fermentation.
Secondary Fermentation
Allow fermentation to continue for approximately 4–6 weeks.
Rack whenever sediment reaches around 1–2 cm.
Clearing & ageing notes
Once fermentation has finished
Allow to clear for 2–3 months
Rack again if necessary
Bottle when crystal clear
Sweet potato wine improves steadily with age
Minimum aging: 6 months
Ideal aging: 12–18 months
Peak drinking: 2–4 years
Tips & notes
Tips for Better Sweet Potato Wine
- Choose firm, fresh sweet potatoes with bright orange flesh.
- Steaming produces a cleaner flavour than vigorous boiling.
- Keep the cooking liquor—it contains valuable flavour compounds.
- Lemon juice or acid blend is essential to balance the wine.
- D47 yeast produces outstanding richness and mouthfeel.
- A little vanilla complements the natural sweetness beautifully.
Common Mistakes to Avoid
- Using old or sprouting sweet potatoes.
- Overcooking until the flesh disintegrates.
- Forgetting the acid addition.
- Using too much vanilla or spice.
- Bottling before the wine has fully cleared.
Serving suggestions
- Serve lightly chilled (10–12°C)
- Excellent with roast pork, turkey and glazed ham
- Pairs beautifully with creamy cheeses such as Brie and Camembert
- Complements lightly spiced Asian dishes
- Delicious with baked cheesecake or apple crumble
Storage & ageing
- Improves for up to 4 years
- Store in a cool, dark place
- Best drinking window: 1–4 years
- Develops increasing richness during the first two years
FAQs
Does sweet potato wine taste like sweet potatoes? No. The vegetable character becomes very subtle after fermentation, leaving a smooth wine with hints of honey, apricot and caramel.
Can I roast the sweet potatoes instead of steaming them? Yes. Roasting caramelises the natural sugars and creates a richer, slightly more complex wine with gentle toffee notes.
Can I use purple sweet potatoes? Yes, but they produce a darker-coloured wine with a slightly different flavour profile.
Why is acid blend or lemon juice important? Sweet potatoes are naturally low in acidity. Adding acid balances the sweetness and produces a fresher, more vibrant wine.
How long should I age sweet potato wine? At least six months, though it reaches its best between one and two years and continues to improve for several more