What you need to do:
|First, cut up the cabbage|
|Then boil it for 10-15 minutes|
|Strain into a glass container and cool. This is the indicator.|
|Prepare your test items - Billy had water, lime juice, lemon juice, jelly crystals, apple juice, brown vinegar, white vinegar, bicarb, milk & coke.|
|Add the indicator to each.|
|If it stays purple, its neutral pH, red / orange is acidic|
|and green is base / alkali.|
Then while we had the milk & vinegar out, we added vinegar to a glass of milk to make curds and whey..
Ah, kitchen science - so much fun!