What do you mean you haven't fed them? Beasties and story people need to eat. Beasties eat story people and they usually like them raw without any dressing. Story people on the other hand prefer their food, as a rule, cooked. It doesn't matter where home is to your characters. Whether it's on this planet, or two stars over, or in a completely different time-period they're going to get hungry. So, before those beasties munch away at your starving hero you need to feed him or her.
Where shall we start? Fast food? Why not? Fast food has been around long before the Golden Arches took over our eating habits. In the future, you can be sure after we have colonized other planets there will be little space ships pulling up to a fast food chain along the Milky Way.
For now, let me take you to London in 1890 where my work in progress, "The Doll Maker" takes place. In this cold, grey world fast food and street vendors were an essential part of the day-to-day living. One particular young character in my story has told me he thinks about food all the time. Don't you Sebastian?
Sebastian: Aye. Though, since I've been working at the theatre, not the Penny Gaffs mind you, I eat more regular. I work the ghost-making machine for the plays that needs'em. Ghosts. It's a good living, better than I had before.
EWG: What's your favorite food to eat?
Sebastian: Hard to say, Miss. When you haven't eaten in a day, what you like is different than when you've had a morsel a few hours before. Ain't it? When the gnawing in my stomach is so bad and that's all I notice. It's a cup of hot soup, I wants. I could see a piece of beef or mutton in the cook shop and it does nothing for me. For a penny, I can have two cups of pea soup. Soup makes me feel safe and toasty like a warm bed.
But, if I hear the Tatoes man calling, "Tatoes. Hot! Hot! Hot! my mouth waters something bad. As soon as I catch sight of the steam coming out the the guv'nor's red tin can, I've got to have one. Hot tatoe with butter and pepper. Makes you feel right good.
EWG: Potatoes with butter, yumm. What about something sweet?
Sebastian: Ah, sweets are for them that have had their stomach filled. Besides, it's gone before you've even had time to enjoy it. When you only have a penny to spend, a sweet dream is not going to fill your stomach. Listen Miss, I need to get back to me job. Best not to stand here too long, if you get my meaning. I can walk you to where you need to go.
EWG: Thank you. I'll be all right.
So, what do your characters want to eat? Yes, I know feeding your story people seems so small when you have a whole world to build. But remember, whether or not you choose to use the information gathered for your worldbuilding will depend on if it enhances or contributes something to move your story forward. Certainly if you don't use the research it will still enrich the image in your mind of the world and characters you are creating. Ultimately, it will be a world your readers will want to call home or at least stay for awhile. By the way, what's for dinner? I'm hungry.
PS: Here's a great site for Victorian England research: www.victorianlondon.org