I found that relating conversation to a student's everyday life is the best method of teaching about food. I than expanded to conversation to include vocabulary to a restaurant or catering business. I than pretended I was a caterer catering a romantic dinner and than a dinner for a boss. I asked questions and went over how to agree or disagree with statements first. Then I had the student go over a pretend conversation. I than expanded it by asking the student to create a conversation with the person requesting the romantic dinner or dinner with the boss.
Teaching all of these points may take more than one lesson. This is great for high school and adult ESL students!!!