the background must be clean: an excellent food picture must have both a prominent subject and a certain foil. But remember one thing: don't let the background steal the limelight of the subject.
learn to close up when shooting. If you want to show some details of food, you must use close-ups. Close-up of food, which to some extent avoids the messy background, because the whole picture has been filled with food.
composition and shooting angle are very important. How to understand "photographic composition+shooting angle", simply put, is to learn how to "set the plate" before taking pictures and know which angle to shoot from to best show the charm of this dish.
Of course, shooting equipment is also very important besides shooting angle. A general SLR camera is still necessary, because it can change the lens, which is very helpful for adjusting the aperture and depth of field. But lighting is very important, which is dimming. For photographers, the level gap of dimming is not small, and they all have their own characteristics. Generally speaking, taking pictures of food is mainly based on warm colors, while soft light is more commonly used. Then, of course, you have to use a tripod, and it is best to do it in the studio, so that the external light is not easy to interfere. This requires a set of equipment. If you want to do it well, it is usually done by professionals, but you can also do it step by step.