In the 2-3 weeks it will take to get supplies going in< I'm not really concerned about "healthy", I'm concerned about getting people basic calories. Carbs, fats, whatever, just so long as it can prime their metabolism to burn what they've got stored. I'd be more worried about getting them water.

And I know this makes me sound cold, and mean, and nasty, and a bully, but if I put a steak or lightly carbonized squirrel in front of a vegan who hasn't eaten for two weeks, I'm pretty sure they'll eat it.