$ 0 0 Image may be NSFW. Clik here to view. The simple answer to why roasted vegetables from a restaurant taste so good: lots of fat and salt and high heat. Refer to the list below and watch Ethan Chlebowski's useful instructional video for the full answer. Salt is the seasoning, not herbs or spices Use fats, thoughtfullyEmbrace high heat (+ convection)Give the vegetables space & timeTry parboilingFrozen vegetables are your friendAdd flavor enhancers after roasting