Wiktionary
competitive eating
n. sport where participants have to consume vast amounts of food in a short time.
Wikipedia
Competitive eating
Competitive eating, or speed eating, is a sport in which participants compete against each other to consume large quantities of food in a short time period. Contests are typically eight to ten minutes long, although some competitions can last up to thirty minutes, with the person consuming the most food being declared the winner. Competitive eating is most popular in the United States, Canada, and Japan, where organized professional eating contests often offer prizes, including cash.
Usage examples of "competitive eating".
Portland had gotten over her early-pregnancy nausea and was now into competitive eating.