In this system, foods are divided into three categories: hot, cold or neutral.
For example, computer programmers are a hot category to 2005, the Government said.
"But the single hottest category remains the dinosaur."
Contemporary furnishings are probably the hottest category, with some breathtakingly high prices.
"Jeans are a really hot category," he said.
Consumer electronics, once a hot category, is losing last year's sole participant, Panasonic.
Others wonder at what point a hot category will run out of available readers.
Why has personal finance become such a hot category?
But urns, statues and benches are the hottest new category of hot property in America.
Among the hottest categories: furniture as well as decorative and fine art.