I'll eat well / I ate well - 잘 먹겠습니다 / 잘 먹었습니다.

In Korea, people express gratitude for food in a specific way.

• 잘(well) 먹겠습니다 (존댓말: polite)

Meaning: I will eat well.

You say this before the meal. 

반말(casual): 잘 먹을게.

• 잘 먹었습니다 (존댓말: polite)

Meaning: I ate well.

You say this after the meal.

반말(casual): 잘 먹었어.

To say if the food was good or bad, you can say the following:

• 맛(taste) 있어요

Meaning: It tastes good.

The literal translation would be "taste exists".

• 맛(taste) 없어요

Meaning: It tastes bad.

The literal translation would be "taste does not exists".

One could offer to enjoy a meal in the following way:

• 맛있게 드세요(eat).

드세요 is similar to 먹어요, however, when you offer, 드세요 is more common.

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