If you love to eat delicious food, and plenty of it, then you tend to gourmandize. A good place for people who gourmandize is an all-you-can-eat buffet.
There are other words with a similar meaning, including binge and overeat. The word gourmandize is a fancier way to essentially say the same thing, although it sometimes implies higher-quality food, like when people gourmandize at expensive restaurants, ordering course after course. No matter what you eat, though, when you gourmandize, you eat too much of it. The word comes from gourmand, "glutton."