Nothing specific, I guess I just wish I knew how to cook well.
I am terrible at following recipes... it just bores me. Whenever I make something I'm willynilly with my seasonings and portions and whatnot (I could never bake). I wish I knew the fundamental principles of cooking and taste (playing off bitters and sweets, correct proportions of fats to acids, complimentary seasonings, etc) so that my experimenting wasn't hindered but was less haphazard.
A prime example was the veggie lasagna I made last weekend. I sorta know the lasagna basics, and I had a recipe for reference, and I used it a little, but I was playing around with the veggies I had on hand and stuff, and while the flavors were really good, the lasagna itself wasn't very cohesive.... it kind of slipslided all over the place with ricotta cheese leaking everywhere. Should I have added an egg to the cheese to bind it more? Should I have layered the ricotta and mozzarella rather than mixing them together?
I feel like if I knew more about what I was doing I could still be free to experiment but also appear slightly more competent. (I've been watching WAY too much "Come Dine with Me" and "Top Chef")