Mulled wine is one recipe where every step has a clear reason, and knowing the reasons makes the difference between mediocre and genuinely great.
Temperature is the whole technique. Warm it to 160°F and hold it there. Don’t let it simmer. Don’t let it boil. A thermometer costs $10 and removes all the uncertainty.
Why You Don’t Boil Mulled Wine
Most recipes say “don’t boil it” without explaining why. Here’s why it matters enough to repeat:
Alcohol. Red wine is 12–15% alcohol. Ethanol boils at 173°F (78°C) — well below water’s boiling point. Ten minutes of aggressive simmering drives off roughly 10–15% of the alcohol content. Twenty minutes drives off up to 30%. This is why mulled wine that was over-heated tastes flabby and slightly medicinal — the alcohol that was carrying the spice aromatics has evaporated.
Tannins. Tannins (the compounds that make red wine dry and astringent) become harsher and more bitter when heated aggressively. At 160°F they mellow. At 210°F they turn sharp and leave a chalky bitterness in the finish that no amount of honey will fix.
Aromatics. Cinnamon, cloves, and star anise contain volatile aromatic compounds — the things that make them smell the way they smell. These compounds evaporate readily when heated. A mulled wine kept at 160°F for 20 minutes smells and tastes strongly of cinnamon and star anise. The same wine held at a hard simmer for 20 minutes smells like a shadow of that.
The fix is trivial: low heat, a thermometer, and attention for 20 minutes.
The Spice Balance
The four primary spices in this recipe do distinct things:
Cinnamon sticks: Warmth and sweetness. The dominant flavor most people associate with mulled wine. Three 3-inch sticks is the right amount for one bottle — more and it starts to taste like Red Hots candy.
Whole cloves: Depth and a slight floral sharpness. Eight cloves is on the higher end of the traditional range; go with 5 or 6 if you want a subtler result. Cloves extract fast — if you’re steeping longer than 30 minutes, fish the cloves out after 20 minutes to prevent the wine tasting medicinal.
Star anise: A faint anise / licorice note that ties the other spices together. Three pods is exactly right. You don’t taste star anise directly in a well-made mulled wine — it just makes the whole thing taste more coherent.
Cardamom: The surprise ingredient in traditional Glühwein. Lightly crush the pods before adding — this opens the husk and releases the seeds, which carry the actual flavor. Four pods adds a faintly perfumed, almost floral note that distinguishes homemade mulled wine from the packet versions that skip it.
Choosing Your Wine
Best options: Merlot, Côtes du Rhône, Garnacha (Spanish Grenache), or basic Bordeaux blend. Look for “medium-bodied” and “fruity” on the label. A $9 to $12 wine is exactly right — the spices take over, and paying $25 for a Napa Cabernet to mull is wasteful.
Works but not ideal: Basic Shiraz / Syrah (works, slightly peppery and tannic), Malbec (works, slightly plummy).
Avoid: Heavily oaked Chardonnay or Sauvignon Blanc (this is a red wine recipe; white mulled wine is a different recipe), overextracted Cabernet Sauvignon (turns harsh when heated), thin Pinot Noir (the body disappears in the spice mix).
German authenticity: Dornfelder or Spätburgunder (German Pinot Noir, more body than French versions) are the traditional choices if you can find them. Austrian Zweigelt also works extremely well.
Crockpot (Slow Cooker) Method
This is the most popular TikTok variation for a reason — it’s completely hands-off and keeps the wine at the right temperature for hours.
- Pour all ingredients into the slow cooker.
- Set to LOW for 2 hours with the lid slightly ajar (condensation can collect and dilute the wine if fully covered).
- Switch to WARM to serve. In WARM mode the wine will hold at the right temperature for up to 4 hours.
- Ladle through a fine-mesh sieve directly into mugs.
One caution: Test your slow cooker’s temperature. Some models run hot and push past 165°F on LOW — if yours does, start on WARM from the beginning and let it come up to temperature more slowly over 3 hours.
Variations
White mulled wine (Weißer Glühwein): Swap the red wine for a bottle of dry Riesling or Pinot Grigio. Use 2 tablespoons of honey instead of 3 (white wines are slightly sweeter base). Replace the cloves with 2 green cardamom pods (the flavor is too strong against white wine) and add a cinnamon stick. Garnish with lemon peel instead of orange. The result is lighter, more delicate, and genuinely good — popular in Bavaria where it’s called Weißer Glühwein.
Glögg (Scandinavian version): Add ¼ cup of raisins and ¼ cup of blanched almonds to the pot. Serve the raisins and a few almonds in each mug along with the wine. Add 2 tablespoons of aquavit or vodka instead of brandy. Traditional Swedish Glögg also uses a small amount of port mixed with the red wine.
Non-alcoholic: See FAQ. Concord grape juice + pomegranate juice + cranberry juice approximates the depth and color of red wine without the alcohol.
Make-Ahead and Serving a Crowd
Double or triple the recipe: Scale up proportionally. One bottle feeds 4 generously; two bottles feed 8 to 10. A Dutch oven or large stockpot handles large batches on the stovetop; a large slow cooker handles them hands-off.
Refrigerating: Strain the mulled wine, cool to room temperature, and refrigerate in a sealed jar for up to 3 days. Reheat gently on the stovetop. The flavor actually improves slightly at day 1 to 2 as the spice infusion continues to develop even cold.
For a party: Keep a pot warm on the lowest burner setting (ideally monitored with a thermometer to stay below 165°F) and let guests serve themselves with a ladle. Set out garnishes — orange rounds, cinnamon sticks, star anise — so guests can customize their mug.
