The Elder Scrolls Online's Update 6 launches later this month, characters with the provisioning skill should go make us a sammich. Just kidding. But if you do decide to make us a sammich, you'll find the process much more streamlined and effective, as ZeniMax is plotting a major overhaul of the profession.
In a dev blog posted last night, the studio explained that it will be reducing the overall number of ingredients in the game, adding new recipes, updating the cooking UI, and giving food additives some oomph. Roleplayers will be happy to learn that lootable food-related objects will soon yield appropriate ingredients (apples from apple baskets, for example), and food buffs will make a bit more sense, like "meat dishes [that] increase your health and fruit dishes [that] increase your magicka."
If you're not actually a cook yourself, all you really need to know is that you should start skinning fish, cows, and chickens for meat and that drink buffs won't suck anymore. Hooray!