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.
- 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 + 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! 😀