Blind bake tart bases to have an even raised crust and make it less soggy when adding fillings.
Sweat and drain eggplants and zucchini to remove extra water and bitterness.
Don't crowd your pan when frying foods. And don't turn the food until it is cooked thoroughly on one side.
It's better to avoid the use of aluminium cookware and foils specially when cooking with acidic foods like lemons and tomato paste.