These sphere can be eaten too. First, you can use any juice to mix with the sodium alginate powder. However the pH of the juice cannot be below pH 4, so syrup water should works well.
The concentration of the sodium alginate is 2% (i.e: 2g of sodium alginate powder in 100 ml of water/juice). It needs to be blend in a blender for about 1-2 min to mix it well.
Prepare 1% calcium chloride solution (calcium lactate will be better as it will not have a bitter taste).
Then use a dropper to drop the sodium alginate solution into the calcium chloride solution. Then you will see the sphere forming.
This is tried again using tap water but it does not work, which mean it needs the calcium ion in the water to help it form a layer to create a sphere.
Here is the picture of the sphere that has been drained out. If you want to eat the sphere, please rinse with water before consuming it.
Here is the video! Happy watching!
