There is a development for a 30-year-old to work in the back office of a catering company. But be sure to get a qualified chef's license. When you get a qualified chef's license, you can be honored to become a chef or chef in the back kitchen The salary is very high, and the boss is also very respectful of the chef. A catering industry good or bad chef plays a very important role. So no matter what industry to go to study, enhance their own exercise. The so-called line of work, there is nothing difficult in the world, only fear of the person who has the heart.