Don't crowd your pan when frying foods. And don't turn the food until it is cooked thoroughly on one side.
Let hot roasted vegetables cool in a plastic bag. They will be easier to peel.
Blind bake tart bases to have an even raised crust and make it less soggy when adding fillings.
A pinch of cumin in tabbouleh and with other vegetable mixes helps eliminate the gas produced by some of the greens.