Impractical idea: I'm sure it's do-able, but the sheer mass and size for something like that even with today's technology would make an end product that isn't exactly portable, and for the performance you'd get out of it for the size I estimate the more modern stuff would outperform it.
Making some strawberry vanilla jam or cherry lemon jam as an alternative to putting butter on your toast (mold the milk culture bread!) since you're lactose intolerant.
"I cant see S***! --YOU GO TO HELL!" --Tourettes guy