Edible Water Pods
Edible Water Pods
Edible Water Pods
Edible liquid bubbles were originally developed for molecular gastronomy by chef
Ferran Adrià. A start-up company named Skipping Rocks Lab quickly raised funds
and started improving the properties of the material at Imperial College London.
They began to work on a prototype, using all-natural materials taken from seaweed
and other plants to make a clear membrane thick enough to hold water but thin
enough to easily bite through. Now, start-up company Skipping Rocks Lab has
turned this into Ooho! – a bite-sized blob of water .
SHAPE
Water is frozen into a ball so that it holds its shape, and to keep the water molecules from mixing with
1 the membrane chemicals.
DIP
The ice ball is dipped into calcium chloride solution. The outer layer of ice melts and some of the calcium
2 ions diffuse in.
ALGINATE
A second bath in warm sodium alginate solution forms the membrane. Calcium ions replace sodium
3 atoms in the alginate and bind the molecules together.
POLYMER
Unlike sodium, calcium has two positive charges. This lets it bond to two alginate chains at once, tangling
4 them up.
THAW
After two to five minutes, enough of the alginate molecules have polymerised together to form a stable
5 skin and the ice melts into a liquid centre. Now you can remove the edible water bottles and drink them.
The inside of each ball is water. The bottle is edible too—it's an algae-based polymer.