I don't do killing and cleaning, but I am a pretty good cook.
The thing is I NEVER weigh ingredients. I do everything by gut feeling and tasting.
I have to admit that I can only do meals, soups, oven dishes and things like that.

I conciously stay away from cakes, pies and things like that, because there it is crucial that you do everything with exactly the right amount of ingredients, in the exact same order as required or you'll have a big jar of ugly gunk instead of a nice souffle.