No need to pack out the nice cutlery or candles for this, but you might wanna just chop it all up nicely and distribute evenly across cover with some ground. Even better: make them a smoothie: blend all the foods together with a little water.... Try and feed them small amounts, regularly...  

Le Menu

Garden trimmings
‘cause its pretty

Eggshells
nice 'n crispy

Coffee
even worms cant escape those caffeine cravings

Vegetables
‘cause their mothers said so

Fruit
Specially banana skins and apple cores

Paper and Cardboard
Try to use paper with little chemicals, or soak it in water and let it dry. Do not use glossy paper

Things to be careful off/add sparingly
Pineapple , Orange peel, and other citrus:  only on occasion, since it can make the farm go sour.
Bread: very good for them, but add sparingly so that it does not go mouldy and become a smelly story
Grass clippings: large amounts generate excess heat and produce ammonia which will kill the worms

NOT ON THE MENU:
yeah, they’re vegetarians.....No meat, pies, sausages or ham. Also not a great fan of dairy ....

Try to keep the bedding moist, but not muddy.
Try and keep your farm in the shade (until worm tanning lotion issues can be sorted out at least...)
They love rain water... but remember not to let it get too moist! If it does get too moist, just add some newspaper pieces, but then feed them a little less so that they can eat those clippings aswell.
If it becomes smelly, you might be feeding your worms too much.
Keep your system aerobic (not smelly) by ensuring adequate aeration of the food by mixing in small amounts of grass stalks or other materials.

When things get a little out of hand after too much breeding has taken place: dig around carefully and scoop out some of the worms. Now you can either: add them to another worm farm, or why not donate them back to Refilwe (come on, we know you want to come visit us)...