What is the process for making a quantum echo in Little Alchemy 2?

In Little Alchemy 2, a Quantum Echo is a hidden element that can be created through a specific combination. HereÔÇÖs the step-by-step process to make it:

1. Create Energy:
Combine Fire and Fire to make Energy.

2. Create Light:
Combine Energy and Air to make Light.

3. Create Time:
Combine Sand and Glass to make Time.
(Alternatively, combine Sand and Pressure to make Stone, then combine Stone and Air to make Sandstone, and finally combine Sandstone and Pressure to make Time.)

4. Create Sound:
Combine Air and Energy to make Sound.

5. Create Echo:
Combine Sound and Time to make Echo.

6. Create Quantum Echo:
Finally, combine Echo and Light to make Quantum Echo.

This combination is one of the more advanced recipes in the game, so it may take some time to gather all the necessary elements. Good luck, and enjoy experimenting!