How to Make Cabbage Juice pH Indicator
Boil about 4 quarts of water.
Shred a small head of purple cabbage
Pour boiling water over cabbage
Let stand for an hour or so
Remove cabbage
The purple water (top left) will indicate if something is an acid by turning pink (right), or a base by turning blue or green (bottom left) when you add it to the cabbage juice.
ain’t science cool?