Low-Carb Iced London Fog Latte Recipe

If you’re on a ketogenic or another low-carb regimen, you probably miss having an Iced London Fog Tea Latte.

After all, if you order a tall serving (12 fl. oz. ,350 ml) of this refreshing beverage at Starbucks, you’ll be adding 19 grams of carbs to your daily carbohydrate intake. We could all agree that this amount for an iced drink may seem quite high to those who’re on a keto diet.

So here’s an alternative.

In this post, you will find out how to make a low-carb Iced London Fog at home.

The regular London Fog Tea Latte is made with Earl Grey tea (i.e., bergamot flavored black tea), lavender flowers (optional), vanilla syrup, and milk.

It’s also known as Earl Grey Tea Latte.

So I’ll use both names interchangeably throughout the post.

Anyway, the Keto Iced London Fog that you’ll get to have by following my recipe, contains only 1 net carb per serving.

It also contains only 30 calories (if you don’t add MCT oil).

To check out how to make a hot keto London Fog, click here.

Without further ado, let’s dive into the recipe ingredients.


To make a keto Iced London Fog Latte at home, you need the following ingredients:

  • Earl Grey Lavender Cold Brew Tea: 4 fl. oz. (120 milliliters).

    I prepare this recipe component in advance.

    Usually, I make a larger cold brew tea batch, which I keep in a jar in the fridge.

    I use it throughout the week whenever I want to make an Iced London Fog.

    It’s quite easy to prepare Earl Grey Lavender cold brew.

    You need 2 tea bags of earl grey tea and 2 teaspoons of dried lavender flowers for 16.5 fl. oz (480 milliliters) of water.

    For this batch of cold brew, I used tea bags by Ahmad tea.

    I also used dried lavender flowers by Kate Naturals.

    I’m quite happy with both products. Even though the dried lavender flowers seemed a bit dull in terms of color at first, they turned out to be very aromatic and added a greatly satisfying flavor to my drink.

    For your convenience, instead of using earl grey and lavender tea separately, you can make your London fog cold brew concentrate with a tea mix, such as this one by Davidson’s (Amazon link).

    So here’s how to make Earl Grey Lavender cold brew tea:

    1. Pour the lavender flowers and the earl grey tea bags into a jar filled with room temperature water.

      Make sure you use filtered or bottled water instead of tap. You can’t make good coffee or tea with water that doesn’t taste good on its own.

      You should use 1 tea bag of Earl Grey and 1 teaspoon of lavender tea for every 8 fl. oz. (240 milliliters) of water.

      If you want a stronger, more concentrated cold brew tea, you can double the amount of tea you add to each 8 fl. oz. (240 milliliters) of water.
    2. Seal the jar with a lid and place it in the fridge. Leave it there for 6 to 12 hours.
    3. Remove the tea bags and strain.

    Use 4 fl. oz. (120 ml) of the earl grey lavender cold brew for an iced London Fog serving. The rest you can keep in the fridge.

    Cold brew tea may last for 7 to 10 days in the fridge if kept in a sealed jar.

    To preserve its properties better, use an opaque jar instead of a clear one.

    Keep in mind that earl grey tea usually contains around 40 milligrams of caffeine per serving. So your homemade Earl Grey Tea Latte will contain caffeine too.

    Since we’re only using 4 fl. oz. (120 milliliters), a serving of iced London Fog will contain less than 40 mg of caffeine.

    Nevertheless, if the cold brew tea is more concentrated or you use more of it, the amount of caffeine found in a serving will rise. You can play around with the ratios to find what works best for your personal taste and needs.
  • Unsweetened Almond Milk: 3.5 fl. oz. to 4 fl. oz (100 to 120 milliliters).

    Unsweetened almond milk contains only 1 net carb per 8 fl. oz. (240 milliliters) serving.

    4 fl. oz. (120 milliliters) of it are enough to make a low-carb iced London Fog.

    This means that the almond milk will only add half a gram of net carbs to your homemade keto latte.
  • Vanilla Extract: 0.5 to 1 teaspoon.

    If you are to make a London Fog, no matter if it’s regular or low-carb, you need to add a bit of vanilla flavor.

    To do this, I add a teaspoon of vanilla extract, which is more than sufficient for a serving.

    Instead of vanilla extract, you can use vanilla-flavored sugar-free syrup, but I’ll address that in detail when describing the next recipe ingredient.

  • Erythritol powder and/or Liquid Stevia.

    I’ve found that the combination of a teaspoon of erythritol powder and 3 to 4 drops of liquid stevia works best for my homemade low-carb drinks.

    When used together, those keto-friendly sweeteners result in a flavor that is pretty close to the flavor of regular sugar. If you don’t have both at hand, use 4 to 5 drops of liquid stevia or 2 teaspoons of erythritol powder.

    Of course, if you don’t expect your iced London fog to be sweetened like the one from Starbucks, don’t use any sweeteners whatsoever.

    Keep in mind that instead of using erythritol and liquid stevia, you can use a keto-friendly coffee syrup of your choice.

    For example, this vanilla-flavored sugar-free syrup by Torani is perfect for this recipe. Two tablespoons of it will add enough sweetness. Furthermore, since it’s vanilla-flavored, you can skip the addition of vanilla extract to your low-carb iced Earl Grey latte.
  • MCT oil (optional): 1 to 2 teaspoons.

    If you’re on a keto diet and you want your iced London Fog to be more energizing and satiating, add a teaspoon or two of MCT oil.

    This way you will make a bulletproof tea drink that will keep you full for a bit longer.

    If you want to find out more about MCT oil and its potential benefits check out this bulletproof coffee guide.
  • Ice Cubes.

    Naturally, if you are to make an Iced Keto London Fog, you’re going to need some ice.

    It might seem obvious, but I’ve been left disappointed many times when I realize that I’m out of ice cubes just when I need them.

How to make a low-carb Iced London Fog Latte: Recipe Directions

To make a low-carb Iced London Fog latte, follow these steps:

  1. Add the sweeteners and vanilla extract to the milk.
  2. Mix and froth the milk concoction.
  3. Pour the milk and the earl grey lavender cold brew into a glass over ice cubes.

Here’s a photo of the low-carb iced London Fog that I made at home:

It’s very tasty, I assure you!

Anyway, for the mixing and frothing, I used a battery-operated drink mixer like this one by Zulay. There are also rechargeable milk frothers, like this one by FoodVille:

Click here to check it out on Amazon.

These devices are very affordable, convenient to use, and add a nice airy texture to a keto drink.

With that being said, as you saw, you can effortlessly make a low-carb version of an Iced London Fog Latte at home. Once you prepare the cold brew, it only takes a minute to put everything else together.

This iced earl grey tea latte is very tasty, refreshing, and, on top of all, keto-friendly.

For those of you who like the Starbucks iced London Fog version, I’m pretty sure that you’ll love this one.

Furthermore, if you’re looking for ways to have your favorite Starbucks drink while you’re on a low-carb diet, check out this guide on the best keto Starbucks drinks and how to order them.

If you want to find more keto-friendly drink recipes, take a look at the following posts:

Yield: 1

Low-Carb Iced London Fog Latte

Low-Carb Iced London Fog Latte

Find out how to make a flavorful and refreshing Iced London Fog Latte, which contains only 1 net carb per serving - perfect for anyone who follows a low-carb/ketogenic diet. This drink is also known as Earl Grey Tea Latte. Along with the Earl Grey tea, I also used lavender flowers for this recipe. They add a delightful flavor to this iced tea beverage. At Starbucks, they make their London Fog Latte with Lavender too, so if you're a fan of their version, you will definitely love the Keto London Fog you'll get to have by following this recipe.


  • Earl Grey Lavender Cold Brew Tea - 4 fl. oz. (120 milliliters) *(see notes)
  • Unsweetened Almond Milk - 3.5 to 4 fl. oz. (100 to 120 milliliters)
  • Vanilla Extract - 0.5 to 1 teaspoon *
  • Erythritol Powder (2 tsp)/ Liquid Stevia (4-5 drops)/Keto-Friendly Vanilla Syrup (1 to 2 tablespoons) *
  • MCT Oil - 1 to 2 tsp. (optional) *
  • Ice Cubes


  1. Add the sweeteners, vanilla extract, and MCT oil to the Almond Milk.
  2. Mix and froth the milk.
  3. Pour the milk into a glass over ice cubes.
  4. Pour the Earl Grey Lavender cold brew tea on top.


*The Earl Grey Lavender cold brew is made by steeping 1 teabag of Earl Grey tea and 1 teaspoon of dried lavender flowers in 8 fl. oz. (240 ml) of cold water for 6 to 12 hours. For more details, check out the ingredient section of the recipe's blog post.

*Instead of using vanilla extract, you can use sugar-free vanilla syrup. By using a keto-friendly vanilla-flavored syrup, you won't need other sweeteners such as erythritol or liquid stevia.

*I've found that sweetening my low-carb drinks with both erythritol (1 tsp) and liquid stevia (3 drops) results in the best flavor. Nonetheless, if you don't have them both at hand, follow my recommendation of using either 2 tsp of Erythritol or 4 to 5 drops of liquid stevia per serving. If you decide on using a low-carb syrup for your Keto Iced London Fog, add 1 to 2 tbsp to a serving of your homemade iced tea drink. With that being said, feel free to skip the addition of any sweeteners whatsoever. This iced tea latte tastes great even without adding sugar substitutes.

*If you follow a ketogenic diet and you want your latte to be more satiating and energizing, add a healthy source of fat, such as MCT oil.

Leave any questions regarding the keto iced London Fog recipe in the comment section below.

I’d also love to find out whether you’ve tried it out. So share your feedback if you’ve already prepared one of those iced lattes at home!

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