How to Make a Proper London Fog (Earl Grey Tea Latte Done Right)
The London Fog is one of those drinks that sounds simple and rarely turns out right. Earl Grey tea, steamed milk, vanilla syrup — three ingredients, but the ratios and the tea choice make or break the cup. Most versions are too sweet, too weak, or both. The good ones balance the bergamot, the vanilla, and the milk in a way that makes the whole drink more than the sum of its parts.
We don't carry earl grey, but our Jasmine Loose Leaf Tea is the base we use for a London fog variation — bergamot swap optional.
This post covers how to make a London Fog that lives up to the name.
What's actually in a London Fog
A London Fog is:
- Earl Grey tea (black tea with bergamot oil)
- Steamed milk
- Vanilla syrup (or vanilla extract + sugar)
- Sometimes a small amount of sweetener beyond the syrup
That's it. The drink was invented in Vancouver in the 1990s — the name is a nod to London's foggy weather and the tea trade that came through London. The drink became popular at coffee chains because it's a simple variation that uses ingredients every café already has.
The problem with most versions: the tea is weak, the syrup is too sweet, and the milk overpowers everything. The drink becomes a sweet, milky, vaguely-tea-flavored thing rather than a balanced Earl Grey latte.
The choice of Earl Grey matters
Not all Earl Grey is the same. The defining characteristic of Earl Grey is the bergamot oil — a citrus oil extracted from bergamot oranges, mostly grown in Calabria, Italy. The amount and quality of bergamot determines whether the tea tastes like Earl Grey or like a generic black tea with a citrus suggestion.
Look for:
- Bergamot listed prominently on the package
- Whole-leaf or large-cut tea (not fannings or dust)
- Single-origin black tea base (Ceylon, Assam, or Kenyan — not a generic blend)
- "Natural bergamot" or "cold-pressed bergamot" on the label if you can find it
Avoid:
- "Earl Grey style" or "Earl Grey flavor" teas — usually synthetic bergamot
- Tea bags with broken leaves and dust
- Anything with added flavoring besides bergamot (lavender Earl Grey, vanilla Earl Grey, etc.) — these mask the base tea
A good Earl Grey is the difference between a London Fog that tastes like a proper drink and one that tastes like flavored milk. Spend the extra dollar on a real Earl Grey.
If you want to upgrade beyond standard Earl Grey, look for:
- Lady Grey: Earl Grey with additional citrus (lemon and orange peel)
- Russian Earl Grey: Earl Grey with a higher proportion of bergamot and sometimes a touch of lavender
- Cream Earl Grey: Earl Grey with a vanilla note already in the tea
For a London Fog, regular Earl Grey or Cream Earl Grey works best. The vanilla note in Cream Earl Grey complements the syrup without competing with it.
The brewing specs
The tea-to-water ratio and the steep time determine how strong the cup will be. A weak London Fog is the most common failure.
Tea amount: 4 to 5g of Earl Grey per 200ml of water. That's about 2 teaspoons of whole-leaf tea or 2 tea bags.
Water temperature: 205°F (just off boiling).
Steep time: 4 to 5 minutes. Don't rush this. Earl Grey needs the full steep to extract both the black tea body and the bergamot oil.
Don't squeeze the bag: Squeezing releases tannins and makes the cup bitter. Let it steep, then remove the bag gently.
The brewed tea should be strong — noticeably darker than a regular cup of black tea. If it looks like regular tea, it's not strong enough.
The vanilla syrup
The vanilla syrup is what makes the drink sweet and adds the signature vanilla note. You can buy vanilla syrup (Torani, Monin, and other brands sell it) or make your own.
Store-bought vanilla syrup: Most coffee-shop-style syrups work. They're typically made with sugar, water, vanilla extract, and preservatives. The sweetness level is consistent. The downside is the artificial vanilla note in some brands.
Homemade vanilla syrup: Combine 1 cup of water with 1 cup of sugar in a saucepan. Heat until the sugar dissolves. Remove from heat. Add 2 tablespoons of vanilla extract (or 1 vanilla bean, split and scraped). Let cool. Store in a sealed container in the fridge for up to 2 weeks.
The homemade version tastes better and you control the sweetness. The store-bought version is faster and more consistent.
The amount: Most London Fog recipes call for 1 to 2 tablespoons of vanilla syrup per 8oz cup. Start with 1 tablespoon and add more if you want it sweeter. A properly balanced London Fog doesn't need more than 2 tablespoons.
The milk
The milk should be steamed, not just poured. Steaming incorporates air into the milk and raises the temperature to 140-150°F. The texture becomes silky and the sweetness becomes more pronounced. Cold milk poured into hot tea doesn't do the same thing.
What kind of milk:
- Whole milk: The classic choice. Steams well, has the highest fat content, produces the creamiest texture.
- 2% milk: Works fine, slightly less rich.
- Oat milk: The best non-dairy option for steaming. Has natural sweetness and steams similarly to whole milk. Barista editions are formulated for higher temperatures.
- Almond milk: Steams less well than oat, but works. Slightly nutty note that can complement the bergamot.
- Soy milk: Steams well, slightly beany flavor that some people notice.
How much milk: For an 8oz drink, use 3-4oz of brewed tea and 4-5oz of steamed milk. The milk should be about 60% of the final cup.
How to steam milk without an espresso machine:
- French press method: Heat the milk in a saucepan to 140°F. Pour into a French press. Pump the plunger up and down 10-15 times. The milk will foam.
- Jar method: Heat the milk to 140°F. Pour into a jar with a tight lid. Shake vigorously for 30 seconds. Remove the lid and microwave for 20 seconds to stabilize the foam.
- Frother: A handheld milk frother ($15-30) works fine for one cup at a time. Heat the milk, froth for 20 seconds.
None of these produce café-quality microfoam, but they all produce acceptable steamed milk for a London Fog.
The assembly
Once you have the brewed tea, the vanilla syrup, and the steamed milk, the assembly takes 30 seconds.
Step 1: Add 1 to 2 tablespoons of vanilla syrup to your mug.
Step 2: Pour the brewed Earl Grey over the syrup. Stir to dissolve.
Step 3: Pour the steamed milk into the tea. Use a spoon to hold back the foam if you want a layered drink, or pour the foam on top if you want a foamy cap.
Step 4: Optional: dust the foam with a small amount of vanilla powder, cocoa powder, or cinnamon.
The drink should be:
- Light tan in color (the milk + tea + syrup combine to a pale tan)
- Hot but not scalding
- Sweet enough to be dessert-adjacent but not syrupy
- Aromatic — you should smell bergamot, vanilla, and milk simultaneously
Variations worth trying
Lavender London Fog: Add 1/4 teaspoon of dried culinary lavender to the tea while it steeps. Strain out before adding the milk. The lavender complements the bergamot in a way that some people love.
Honey London Fog: Skip the vanilla syrup and use 1 tablespoon of honey instead. The honey + bergamot combination is sweet but more floral than vanilla.
Iced London Fog: Brew the tea strong (double the leaf), cool it, then pour over ice with the vanilla syrup. Top with cold milk. The iced version is best on hot days when a hot latte doesn't appeal.
Decaf London Fog: Use a decaffeinated Earl Grey. The Swiss Water processed versions preserve the most flavor. Chemical-decaf versions can taste flat.
Concentrate version: For a stronger drink, reduce the brewed tea by half on the stovetop before adding the milk. The result is a more intense bergamot note and a thicker cup. This is the barista approach for serious Earl Grey drinkers.
When a London Fog is the wrong drink
The London Fog isn't for everyone. If you don't like Earl Grey, you won't like a London Fog — the bergamot is the dominant flavor and there's no way to mask it.
If you find Earl Grey too perfumed or soapy, try a different drink:
- Chai latte: If you want a sweet, spiced, milk-forward drink
- Matcha latte: If you want vegetal and slightly bitter
- London Smoke: A smoked black tea latte, similar structure but with lapsang souchong
- Dirty chai: A chai latte with a shot of espresso, if you need caffeine
The London Fog is a specific drink for a specific taste. If you like Earl Grey, you'll probably love a well-made London Fog.
What I'd change about most café versions
If you've had a London Fog at a coffee chain and found it disappointing, here's why:
- The Earl Grey used was low-grade (often a generic "Earl Grey" blend)
- The syrup was sweet (typically 2-3 tablespoons per cup, sometimes more)
- The milk was overheated (above 160°F, which denatures the proteins and dulls the sweetness)
- The tea was brewed too weak
A home London Fog with proper Earl Grey, controlled syrup, properly steamed milk, and a strong brew will be noticeably better than most café versions. The drink is worth making at home.
The takeaway
A London Fog is a simple drink with three ingredients, but the quality of each ingredient and the ratios determine whether the cup is balanced or sweet milk.
Use proper Earl Grey — whole-leaf, real bergamot, no synthetic flavoring. Brew it strong — 4-5 minutes at 205°F. Use real vanilla syrup — homemade or quality store-bought. Steam the milk — not just pour it. Don't oversweeten — 1-2 tablespoons of syrup is enough.
Done right, a London Fog is one of the most comforting drinks you can make at home. Done wrong, it's a sweet milky disappointment. The difference is in the details.
Brew slow. Sip slow. A good London Fog is what Earl Grey wishes it could be in the morning.