As part of your contract package, you will be provided with three meals a day and perhaps a snack here and there as well.
If you have not visited Korea before, you may still be familiar with many of the other more common Asian foods. However, while many Asian foods might have given you a little foretaste of Korea, I must relay that Korean food is very distinct among Asians foods. Expect spicy foods with lots of vinegar tastes. Cabbage is common as are many vegetables and white, sticky rice is served with all meals. Noodles of all kinds are also served with most meals, usually with meat and vegetables interspersed. Pork is the most common meat, but tofu is often used as a substitute. "Kimchi" is a favorite here and is eaten with the fervency of a fine dessert. It is made of spicy cabbage with vinegar. Now I know that may not be your idea of dessert (and not mine either), but the typical Western dessert is a bit of a rarity. If you like sugar and sweets, be careful you don’t end up with bean flavor or potato flavored ice cream. Brewed coffee is not really a part of the culture, but many people drink instant. Teas, on the other hand, are quite plentiful as is fruit. Milk and yogurt are plentiful but cheese is less so.
Also, please note that there are no morning, mid-day, and evening meal distinctions here. In other words, you may eat something for breakfast one day and then again for dinner a few days later. There are no "breakfast foods" or "dinner foods". All meals are what Westerners would consider more of a dinner.
Anyone who is a vegetarian or vegan can notify the cooks upon arrival and they will accommodate.