I don't believe that food without animal fat lacks flavour. A vegetarian bloke I once knew always cooked vegetarian food (as you'd expect). He made a large portion once and offered me some. I reluctantly agreed to take some (reluctantly as it was "only" vegetables) and although I eat vegetables, a small amount a day is enough for me. Wow. What a surprise I got. It was absolutely delicious and full of flavour. It taught me that it's not what you've got, it's what you do with it.