Demo:

https://www.artstation.com/artwork/mqkrg9

https://youtu.be/RxPer18RAXs?t=12

Documentation: 

https://drive.google.com/file/d/1BP2Rs7qEIFN_tNNZho1rZzJzhAr7O3ot/view?usp=sharing

Simulates liquid in bottles based on movement/Velocity (can also be used with physics ). The appearance of the liquid customizable by tweaking the values in material instances and exposed Blueprint variables. The asset is easily be implemented to custom models by simply applying the material on the object(Documentation/Tutorial will be coming soon).

Important Info: Currently works in Unreal Engine 4.25. Will be improved and updated to newer engine versions. The Asset can also be updated manually by importing to an existing 4.25 project and opening the project in a newer engine.