Matt Laur , Apr 05, 2011; 07:21 p.m.
I'd recommend going with studio flash to do it right ... but your "enough light" problem is very simple to solve: get a good tripod and a remote release. Without having to worry about motion blur from a hand-held camera, you can use a nice clean low ISO setting, whatever aperture produces the depth of field you want to see, and as long a shutter speed as you need to pull in as much light as you need for a decent exposure. Don't get a cheesy tripod.
If you go with flash: you'll be getting many, many times the light, and getting it instantaneously. The number (and power) of lights depends on the modifiers you'll be using, the distances from which they'll be used, and most importantly, the look you're after.
You really, really need to read (and obey!) this book: Light: Science and Magic. It will get you thinking about all of the issues in play, here, and how to make the most of your food textures, reflective packaging, etc.