Make Adjustments to the White Balance
Play around with the white balance a little; you want the whites in the food and/or background to look like they were bleached, not yellowish like an old jean jacket. Try taking a test picture of something white like a piece of paper first so you can make the correct adjustments. If you are in a public place where there might be lighting that can yellow the image, this step is really important. landscape photography artists landscape photography ideas
The aperture helps you keep things in focus. When you want your cupcake to be in focus but the half empty glass of milk in the background to be a little bit blurred, you can use smaller F-stop settings. Using small F-stop numbers will help also help with blurring in low light (like in a restaurant) by creating a shorter shutter speed. The opposite is true for well lit areas: for those, you will want to use a higher F-stop setting to get the whole image in focus.