In virtual villagers 2 if you are running low on food and there is no way out and you can make stews or can upgrade to make stews you can make your villagers live on about 30 food until you get out.
First you must get at least thirty food. Then, you create a stew made of Purple Flower, Purple Flower and Orange Flower (This is a stew to completly restores all villagers that eat it). Through my research I found that if you have 0 food your villagers health will decrease until death. One way to get by that is to create stews that completely resore your villagers.

(Anybody who sees an error please notify me or edit it.)

Thank you