Homemade Natural Blue Food Coloring

Natural Blue Food Coloring--from a Surprising Source!

Ever since my son was born with life threatening food allergies and eczema, we knew that we needed to avoid toxins and eat as natural as possible. I started making everything from scratch, including dairy-free milk, homemade seasonings, and even ketchup, plus making whole food substitutes for things like DORITOS®, marshmallows, and white chocolate chips.

Most of the time I try to keep things simple in the kitchen since my life is really busy, but sometimes I like to have a little extra fun with some food coloring to jazz things up a bit.

But artificial food coloring just isn’t an option for us.

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So when my boys wanted some fun chocolate cupcakes for an ice hockey party with blue colored frosting, I sought out a way to make natural blue food coloring…..

Now, I’d found other ways to use natural items to make natural food color, like in my Mint Fudge and Easter Fudge, but blue natural food coloring was a new challenge for me.

What’s Wrong with Artificial Food Colors?

We all know that those artificial food colors are not healthy and are suspected of having links to behavioral and health problems.  We have avoided them in our home completely since our son’s diagnosis with autism, but I wish we had done it sooner.

Did you know that a lot of artificial food colors have aluminum in them?  When you see, “FD & C Yellow Aluminum Lake” on an ingredient label, you can know that you will be eating aluminum. And if the label doesn’t say “aluminum,”  then you might be eating barium or zirconium.  No thank you!

Recently my son had a season finale for his ice hockey league (the Griffins Youth Foundation), and each team member was going to be presented with a cupcake decorated with colored frosting to match his uniform.  Ugh — my son’s team color was his favorite color, blue.  Why couldn’t he have been on the green team?  Then I could have used parsley like I did for my Saint Patrick’s Day Fudge.

Well, I initially told him not to get his hopes up — that there was no way that we were going to be able to make blue frosting naturally, but then I found out how.  And now I am going to share it with you!  You are probably not going to believe what vegetable you are going to use!


You could use this natural blue food coloring for any of the following:

  • dying Easter eggs
  • paper mache projects,
  • crafts
  • fun creative food ideas (blue mashed potatoes, anyone?), like —


Blue Food Colouring in Frosting

I think they turned out great, and my kids did too!  I’ll be sharing the chocolate/carob cupcake and peppermint icing recipes in the near future.  Chocolate and mint is one of my favorite combos.

One other thing to know about natural food coloring is that some of them are prone to fading.  The blue wasn’t that deep to begin with (we tried to get the first batch deeper, but ended up with a really bad baking soda taste :-(), but it faded even more in the days following.  So if you color frosting for cupcakes, eat ’em up quickly!   I’m sure that won’t be hard!

(Money Saving TipUse filtered water for cooking the cabbage and then, though it is pretty well boiled, you can still eat the leftover veggies for dinner.  Try topping them with my Moroccan Vinaigrette and Chat Masala.)

What will YOU use this Natural Blue Food Coloring for?


    Speak Your Mind


  1. Was wondering how long the batches of coloring last.

  2. Sorry my question wasn’t clear. When you make a batch of coloring do you know how long it will last if you don’t use it all up. Could you freeze it?

    • It was clear. I’m sorry but I don’t know how long it will last. I assume it would freeze. If you add something acidic to it, the color will change.

  3. Will this dye work on fabric?

    • Yes, it should.

    • No not really. It’ll take a little color, but it’ll fade quickly. For the most color, you want to use a different recipe, not one that’s food safe. Soak chopped red cabbage in cold water for a week. Mordant the fiber with alum. Soak the fiber in the dye. The longer you soak the deeper the color will be. Soda is not necessary to get a blue with this, but adding an acid or base will shift the color. Soda will shift it green and acid will shift it purple. The color is not very fast and will fade to grayish over time.

  4. Would fruit puree works to dye frosting? The base for my frosting is cream cheese, honey or vanilla. It’s for dog’s birthday cakes…

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