Hi the Bullet physics in Poser will work with burgers I'm sure :) I can't promise it will be the easy solution though, but it is more achievable than the cloth room.

The cloth room is quite likely to deform your ingerdients too much, you'll end up with a melted burger :)

The Bullet Physics simulations are far more controllable giving you more options ranging from full rigid objects to soft bodies (even infaltable bodies).

I'd start off simply maybe with the bottom bun and burger and get that working as you want, then add the other laryers of the burger one by one.  Until you have the whole thing working.

You may find that you need to experiment a fair bit to get it finished, but I'm sure you can get it working :)

John

 

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