Gelatin/Agar Agar Clarifcation

Oatmeal in the front, gazpacho in the back.

So you make the flavor, substance, solid you want to liquefy... turn to clear liquid... shear a little agar agar over the top, freeze, let it defrost in cheese cloth in strainer over container then presto chango-clear liquid.  Not quite as quick or clear as a centrifuge, not quite clear as distilled, but still neat.  Maybe you can get kids to eat things they normally wouldn't by tricking them into drinking them ;)