I pack to minimize weight, minimize volume (both so I can take more stuff!) and minimize odors.

So I'm with Preacher: I put everything I can into freezer ziplock bags, and burn them as they get emptied. Store-bought foil packs get repacked at home into burnable ziplocks, and little ziplocks get collected into big ziplocks (all soups together, for example).

No plastic tubs (all plastic picks up odor, even Nalgene) and only a few small Nalgene bottles for veg oil, lemon juice, and S&P. I use stashed olive barrels for canoeing, hung packs for backpacking.