Have fun with the kids making this tasty sweet-shop favourite.
For the sherbet you will need:
- 1 tsp Citric Acid,
- 1 tsp Bicarbonate of Soda,
- 3 heaped tbs Icing Sugar,
- 2 tbs flavoured Jelly Crystals (your choice)
To make the sherbet put all the ingredients in a small bowl and give them a stir. Take half a teaspoon and put it on the tip of your tongue. This is where you may need to vary the ingredients a little. If it is too sour add more sugar, if it doesn’t fizz try adding a little more citric acid or bicarb.
The science bit!
The fizzing on your tongue is the result of an acid-based reaction. The combination of an acid (citric acid) and an alkaline (bicarb) with saliva mix to create a gas (carbon dioxide), which is lots of tiny bubbles popping on your tongue!
Citric acid is the sour part and is found in citric fruits such as lemons, limes and oranges. Another acid found in citric fruits is ascorbic acid, also known as vitamin C…don’t be fooled, sherbet is not part of a healthy diet! The jelly crystals are purely for flavour.
We hope you enjoy this fizzy experiment!