Skip to content
A vivid iced latte with blue spirulina swirled through milk.

Electric Blue Iced Latte

A simple iced latte transformed by an electric-blue pour.

Cold drinks

Electric Blue Iced Latte

Espresso, cold milk and an electric-blue pour. Keep the layers separate for the drama, or stir it all together and watch the colour change.

What you'll need

  • 200-250 ml cold milk or oat milk
  • 1 shot espresso
  • 0.25 g blue spirulina
  • 10-15 ml vanilla syrup, or to taste
  • Ice

The exact amount of blue spirulina isn't precious. Start around 0.25 g for one drink and use a little more or less depending on the blue you want.

Make it

  1. 1Make the blue milk. Mix the blue spirulina with a splash of cold milk until smooth. Stir in the remaining milk and vanilla syrup.
  2. 2Fill a tall glass with ice. Pour in the blue milk.
  3. 3Add the espresso. Pour it slowly over the top if you want to keep the blue and coffee layers visible.
  4. 4Serve immediately. Leave it layered for the first impression, then stir before drinking.

Make the pour look good

The trick isn't more blue spirulina. It's keeping the coffee and blue milk apart long enough for the customer to see them.

Pouring the espresso slowly over plenty of ice gives you that dark coffee layer above the blue milk. As the two meet, you'll get the swirls and gradients that make the drink interesting.

If you mix the espresso directly into the blue milk, expect a much darker, less obviously blue drink. It'll taste perfectly fine. It just won't look like the photograph.

A couple of things worth knowing

Blue spirulina is easiest to use cold, which makes iced drinks particularly forgiving. If you're having trouble getting it smooth, mix the powder with a small amount of liquid first rather than throwing it straight into a full jug.

And because espresso is so dark, putting the blue in the milk rather than the coffee gives you much more colour to work with.

Try it with

Coconut

Swap some or all of the milk for coconut milk and keep the vanilla light.

Blue vanilla

Skip the espresso altogether for a simple iced vanilla milk.

Blue matcha

Use matcha as the contrasting top layer instead of espresso. The blue and green together make a completely different drink.

Making these for a cafe?

Make the blue milk ahead rather than measuring a fraction of a gram for every order.

  • 1 L milk or oat milk
  • 1 g blue spirulina
  • Vanilla syrup to your house recipe

Mix well, refrigerate, and give the bottle a shake before service if necessary.

Once you've found the shade you like, that's your house ratio.

Make yours blue

PrismaBlu™ Vivid blue spirulina powder.

PrismaBlu™ Vivid

Blue spirulina powder

Choose a pack
Using blue spirulina for the first time? Read our guide