I finally got blue cake colored with homemade natural blue food coloring! Yay! 😀 I’m so excited!
That’s part 3 of my naturally colored blue cake experiment. I used a different recipe again and I tested all ingredients because homemade natural blue food coloring made with red cabbage is ph-sensitive. I used my natural blue food coloring as ph indicator. Flour seems to be more acidic than starch, so I used half starch and half flour for the blue cake. Eggs are basic/ alkaline and sugar is just slightly acidic: Blue sugar hearts naturally colored with red cabbage.
Ingredients:
- 1 egg
- 30g flour
- 30g starch
- 25g sugar
- 15g butter
- 1 tsp baking powder
- 10 drops homemade natural blue food coloring (made with red cabbage & baking soda)
Mix together all ingredients and bake at 160°C for 20 – 25 minutes.
I thought the cake batter must be blue before baking, but it has to be purple: The purple will turn blue while baking. Last time I added so much baking soda that the cake batter was blue, but the cake turned green while baking!
I used 2 tbsp cake batter per cupcake. The cupcake on the left is colored with natural blue food coloring. The cupcake on the right is colored with natural blue food coloring +Â 1/8 tsp baking soda: it’s rather green than blue or turquoise.
The naturally colored blue cake tastes just like ordinary cake! There’s no trace of red cabbage or baking soda. So I finally can bake natural blue cake! Yay! 😀
How fun! Thanks for sharing at The Blogger’s Pit Stop!
Thanks for stopping by, Roseann! 🙂
Thanks for sharing at the What’s for Dinner link party!
Thanks for visiting, Helen! 🙂
That is really fascinating…almost like chemistry, which I guess it really is. Who would ever know red cabbage would make things turn blue instead of deep purple?? So is it the addition of the baking soda that does it? Anyway, looks like you’ve been doing lots of experimentation with getting the blue color. (I took a peek at the sugar hearts too.) This is really interesting.
Thanks, Florence! Yes, red cabbage turns blue in an alkaline environment, so it dyes eggs and cotton fabric blue without a mordant. Egg shells are alkaline and cotton fabric is slightly alkaline.
Oh that’s very clever! Well done for persevering with the experimenting – it’s funny how it comes out blue but goes in purple! x
Thanks, Clare!
The cake is looking great with the natural colors.. Happy Fiesta Friday:)
Thank you, Nimmi! 🙂
Thank you for sharing it over at Food Friday! Excited to see what you’ll be sharing next!
Thanks for stopping by!
Yay! You are so good the way you persevere, I’m pleased you are happy with your blue cake. (and I’m sure eating the experiments hasn’t been too much of a hardship either! )
Thanks, Julie! 🙂 I know you don’t like blue cake! 😉
This is fun. You had to put a lot of work into figuring this out. The soft blue colour is really really pretty.
Thanks, Leanna! And the cake fortunately doesn’t taste of red cabbage! 😉
Great experiment and I like the fact it is natural food colouring Lina
Thanks, Amber! 🙂 And the cake tastes great!
Blue cake !! Something i hv never seen . You r super innovative.
Thanks so much, Mandira! 🙂
This is awesome, I didn’t know that these ingredients make a natural blue dye! Thank you so much for sharing, I am definitely going to try this. 🙂