Making dinner tonight, I discovered half a red cabbage in the fridge (The OH bought it on the weekend and never got around to using it). I boiled up the outer leaves in several cups of water. When it was a nice, dark colour, I strained it and poured some of the now purple liquid into a glass. I gave the glass to the kids, along with some lemon wedges and a container each of bicarb soda and vinegar.
Loo was the most interested in it (the other 2 were a little distracted having their screen time). He was curious about the colour change to red when the acids were added and then to blue when he added the alkaline bicarb soda.
I'm starting to think that perhaps this explains our turquoise garlic incident last year.
It would have been fun to try using an egg like in this experiment but Loo's allergic to raw egg white. We still have a couple of cups of the cabbage water leftover so we might have to experiment with some other ingredients over the next few days!
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