Hi Giovanni,

Here are several options for the coffee to be infused into the milk.

It takes place in a small tank.

1 and 1A are without movement

2 and 2A is with rotation

3 and 3A is with a milkfoam layer

The shots are close and wide so you can see what is happening

240 frames

1: Throw from the left no movement

Milk 30/70, strong coffee, 30ml tank

1A:  Same as 1 wide

2: Coffee in milk with twist, 30 milk/70 water.

Strong coffee 30ml

2A:  Same as 2 wide

3: Coffee with milk foam

Foam CRT milk 30/70, strong coffee 30ml

3A: Same as 3 wide