To cut ingredients into pieces of a certain size
When to use
Slicing vegetables, Cutting meat, Slicing fruit
The nuance
Use 썰다 when cutting ingredients into slices or chunks of a certain size, usually with a knife.
썰다 (sseol-da, sseolda) · 다지다 (da-ji-da, dajida)
'썰다' means to cut ingredients into pieces of a certain size, while '다지다' means to chop ingredients very finely to make them soft and small.

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To cut ingredients into pieces of a certain size
When to use
Slicing vegetables, Cutting meat, Slicing fruit
The nuance
Use 썰다 when cutting ingredients into slices or chunks of a certain size, usually with a knife.
To chop ingredients very finely to make them soft and small
When to use
Chopping seasonings, Mincing meat, Chopping garlic
The nuance
Use 다지다 when chopping ingredients very finely so they blend well into dishes, often used for seasoning or meat.
채소를 먹기 좋은 크기로 썰었어요.
chae-so-reul meok-gi joh-eun keu-gi-ro sseol-eoss-eo-yo., chae so reul meok gi joh eun keu gi ro sseol eoss eo yo.
'썰다' is appropriate when cutting vegetables into bite-sized pieces.
채소를 아주 잘게 다졌어요.
chae-so-reul a-ju jal-ge da-jyeoss-eo-yo., chae so reul a ju jal ge da jyeoss eo yo.
'다지다' fits when chopping vegetables very finely to make them soft.
고기를 크게 다졌어요.
go-gi-reul keu-ge da-jyeoss-eo-yo., go gi reul keu ge da jyeoss eo yo.
'다지다' means chopping very finely, so '크게 다지다' is incorrect; use '썰다' instead.
마늘을 다져서 양념에 넣었어요.
ma-neul-eul da-jyeo-seo yang-nyeom-e neoh-eoss-eo-yo., ma neul eul da jyeo seo yang nyeom e neoh eoss eo yo.
'다지다' is suitable for chopping garlic finely for seasoning.
과일을 다져서 샐러드에 넣었어요.
gwa-il-eul da-jyeo-seo sael-reo-deu-e neoh-eoss-eo-yo., gwa il eul da jyeo seo sael reo deu e neoh eoss eo yo.
Fruits are usually cut into pieces of certain size for salads, so '다지다' is inappropriate; use '썰다'.
고기를 다져서 만두 속을 만들었어요.
go-gi-reul da-jyeo-seo man-du sok-eul man-deul-eoss-eo-yo., go gi reul da jyeo seo man du sok eul man deul eoss eo yo.
'다지다' is correct when mincing meat finely for dumpling filling.
고기를 썰어서 만두 속을 만들었어요.
go-gi-reul sseol-eo-seo man-du sok-eul man-deul-eoss-eo-yo., go gi reul sseol eo seo man du sok eul man deul eoss eo yo.
Dumpling filling requires finely chopped meat, so '썰다' is incorrect; use '다지다'.
양파를 썰어서 볶았어요.
yang-pa-reul sseol-eo-seo bokk-ass-eo-yo., yang pa reul sseol eo seo bokk ass eo yo.
'썰다' fits when slicing onions into pieces for frying.
How should you prepare meat for dumpling filling?
Which word is appropriate for preparing fruit for salad?
You chopped garlic finely for seasoning. Which word fits?