the meshing of the two different particle types, beer or foam, is the first step. You can put several beer emitters into one mesh and the foam emitter into another one. Then set the export options in "export central" to "bin" files for the import into Cinema4D. Alternatively you can use the render kit functions of the import plugins to create the mesh directly in Cinema4D.
The pipeline between C4D and Realflow is explained in detail in this video, for examplehttps://youtu.be/Kj019HNwD0w
3D Fluff studios have a convincing Beer+Foam rendering tutorial in their store:https://youtu.be/JGtC4GkRv4s
However, rendering convincing foam is vey difficult. Especially in close-up shots.