Used when food or taste is sweet.
When to use
expressing sweet taste, taste of drinks, taste of fruits
The nuance
달다 is used to express sweetness in sugar, fruit, drinks, etc. It is a positive taste expression.
달다 (dal-da, dalda) · 쓰다 (sseu-da, sseuda)
달다 (dal-da) expresses sweetness, 쓰다 (sseu-da) bitterness, and their usage differs accordingly.

One lane per word — no nested boxes, just the gist.
Used when food or taste is sweet.
When to use
expressing sweet taste, taste of drinks, taste of fruits
The nuance
달다 is used to express sweetness in sugar, fruit, drinks, etc. It is a positive taste expression.
Used when food or taste is bitter.
When to use
expressing bitter taste, taste of coffee, taste of medicine
The nuance
쓰다 is used to express bitterness in coffee, medicine, vegetables, etc. It is a negative or strong taste expression.
이 사과는 정말 달다.
i sa-gwa-neun jeong-mal dal-da., i sa gwa neun jeong mal dal da.
Use '달다' when the apple tastes sweet.
이 사과는 정말 쓰다.
i sa-gwa-neun jeong-mal sseu-da., i sa gwa neun jeong mal sseu da.
Apples are usually sweet, so using '쓰다' is unnatural.
커피가 너무 쓰다.
keo-pi-ga neo-mu sseu-da., keo pi ga neo mu sseu da.
Use '쓰다' to express the bitterness of coffee.
커피가 너무 달다.
keo-pi-ga neo-mu dal-da., keo pi ga neo mu dal da.
Use '달다' when coffee tastes sweet due to sugar.
이 약은 달다.
i yak-eun dal-da., i yak eun dal da.
Medicines usually taste bitter, so '달다' is inappropriate.
이 약은 너무 쓰다.
i yak-eun neo-mu sseu-da., i yak eun neo mu sseu da.
Use '쓰다' to express the bitterness of medicine.
이 채소는 달다.
i chae-so-neun dal-da., i chae so neun dal da.
Use '달다' for sweet-tasting vegetables like carrots.
이 채소는 쓰다.
i chae-so-neun sseu-da., i chae so neun sseu da.
Use '쓰다' for bitter-tasting vegetables like mugwort.
The apple tastes too ___
This coffee is too ___
A medicine with a strong bitter taste is ___
Carrots taste ___
What does it mean?