ttalgireul ssiseoseo keobe dama dumyeon husigeuro meokgi pyeonhae.

딸기를 uses the object marker -를, because strawberries are the thing being washed and put into the cup.

• 딸기를 씻다 = to wash strawberries
• 딸기가 would mark strawberries as the subject, which would not fit this sentence naturally

So here, 딸기 is the object of the actions 씻어서 and 담아 두면.

씻어서 is from 씻다 (to wash) plus -어서.

In this sentence, -어서 connects actions in sequence:

• 씻어서 = wash and then...
• So 딸기를 씻어서 컵에 담아 두면 means something like if you wash the strawberries and put them in a cup...

A natural English translation often sounds like:

• wash the strawberries, put them in a cup, and then...

Here, -어서 shows that the first action happens before the next one.

Yes, 씻고 would also be possible in many situations.

• 씻고 = wash, and...
• 씻어서 = wash, and then...

The difference is subtle:

• -고 is a more neutral and
• -어서 often feels a little more connected in sequence, sometimes like after doing X

So both can work, but 씻어서 sounds very natural when one action is done first as preparation for the next.

This is a very useful Korean pattern.

• 담다 = to put in, contain, place into a container
• 담아 두다 = to put something somewhere and leave it there / keep it prepared
• -면 = if / when

So:

• 담아 두면 = if you put it in and leave it ready
• more naturally: if you put it in a cup ahead of time

The key point is 아/어 두다. It often means doing something in advance for later convenience.

Examples:

• 문을 열어 두다 = leave the door open
• 음식을 만들어 두다 = make food in advance
• 딸기를 컵에 담아 두다 = put strawberries in a cup beforehand and keep them ready

The standard spacing is usually 담아 두면, because 두다 is treated as an auxiliary verb after the main verb.

So:

• standard: 담아 두면

But in everyday writing, many people also write:

• 담아두면

You will see both. For learners, it is safest to remember the standard spaced form first.

Because -에 marks the place or destination where something is put.

• 컵에 담다 = put into a cup

Here the cup is the container/location, not the direct object of the verb. The strawberries are the thing being placed inside it.

So:

• 딸기를 = the thing being put in
• 컵에 = the place/container it goes into

Both can sometimes translate as put in, but there is a nuance difference.

• 넣다 = to put in, insert
• 담다 = to place into a container, often with a sense of containing, arranging, or serving

With food, 담다 is very common when putting food into bowls, cups, plates, lunch boxes, etc.

Examples:

• 그릇에 밥을 담다 = put rice into a bowl
• 컵에 딸기를 담다 = put strawberries into a cup

So 담다 sounds natural because the strawberries are being prepared in a container for eating.

후식 means dessert.
-으로 here means as or for the purpose of.

So:

• 후식으로 먹다 = eat it as dessert

This -으로 marks the role or function of something.

Compare:

• 간식으로 먹다 = eat it as a snack
• 선물로 주다 = give it as a gift
• 후식으로 먹다 = eat it as dessert

So the sentence is not just saying eat dessert, but rather eat the strawberries as dessert.

먹기 편해 comes from:

• 먹다 = to eat
• 먹기 = eating / to eat
• 편하다 = to be comfortable, convenient

So 먹기 편하다 literally means:

• eating is convenient
• more naturally: it is convenient to eat
• or it is easy to eat

This pattern is very common:

• 보기 편하다 = easy/comfortable to watch
• 읽기 편하다 = easy/comfortable to read
• 쓰기 편하다 = easy/comfortable to use for writing
• 먹기 편하다 = easy/convenient to eat

The nuance is not exactly about difficulty in ability, but about convenience and comfort.

This is an important nuance.

• 먹기 쉬워 = easy to eat
• 먹기 편해 = convenient / comfortable to eat

쉬워 focuses more on difficulty level.
편해 focuses more on convenience, practicality, or comfort.

In this sentence, 편해 is a great choice because putting strawberries in a cup beforehand makes them more convenient as dessert. It is not just that they become less difficult to eat; they become more ready and handy.

Because Korean often leaves out the subject when it is obvious from context.

This sentence does not explicitly say you or it, but the meaning is understood. In natural English, it would be something like:

• If you wash the strawberries and put them in a cup beforehand, they’re convenient to eat as dessert.

Korean often omits:

• you
• I
• they
• it

if the listener can figure them out from context.

Yes, -면 usually means if or when, depending on context.

Here:

• 담아 두면 = if you put them in and leave them ready
• whole idea: If you wash the strawberries and put them in a cup ahead of time, they’re convenient to eat as dessert.

In many practical statements like this, -면 can feel like:

• if you do this, then...
• when you do this, then...

It often introduces a general useful suggestion or condition.

편해 is the casual, non-polite form.
편해요 is the polite version.

So this sentence is in a casual speaking style, which is very common in examples, conversations with friends, or plain explanatory speech.

You could make it polite like this:

• 딸기를 씻어서 컵에 담아 두면 후식으로 먹기 편해요.

The meaning stays the same; only the speech level changes.