watasi ha, daikon no sarada ha azituke ga usui hou ga suki desu.

Japanese can have an overall topic and then a more specific topic inside it.

• 私は = as for me
• 大根のサラダは = as for daikon salad

So the sentence is doing something like:

As for me, when it comes to daikon salad, I prefer the lightly seasoned kind.

The second は can also add a slight contrastive feeling, as if daikon salad is being singled out from other foods.

大根のサラダ means daikon salad or a salad made with daikon.

The particle の connects nouns. In English, it can correspond to several things depending on context, such as:

• of
• with
• a noun used like an adjective

Here, 大根のサラダ is most naturally understood as a salad whose main ingredient is daikon.

味付け means seasoning, flavoring, or the way something is seasoned.

So:

• 味付けが薄い = the seasoning is light
• more naturally in English: it is lightly seasoned / the flavor is mild

It is not talking about the ingredients themselves being thin. It is specifically about the strength of the seasoning.

Yes, 薄い often means thin, but it also has other related meanings such as light, weak, or faint.

With food or drink, 薄い commonly means:

• lightly seasoned
• weak in flavor
• not strongly flavored

So here 薄い does not mean physically thin. It means the seasoning is mild or light.

In 味付けが薄い, the が marks 味付け as the thing that has the property 薄い.

So this part means:

• the seasoning is light

This whole clause then modifies ほう:

• 味付けが薄いほう = the one/type whose seasoning is light

You could sometimes use は instead of が in other contexts for contrast, but here が is the normal choice inside this descriptive clause.

Here, ほう means the one, the side, or the type.

So:

• 薄いほう = the lighter one
• 味付けが薄いほう = the one that is more lightly seasoned

In sentences about preference, Aほうが好きです often means:

• I prefer the A one
• I like it better when it is A

So this sentence implies a comparison with some other possibility, such as a more strongly seasoned daikon salad.

Usually, yes. ほう often suggests one side of a comparison, even if the other side is not stated.

Here, 味付けが薄いほうが好きです implies something like:

• compared with a more strongly seasoned version
• among possible versions, the lightly seasoned one is preferred

Japanese often leaves the other option unstated when it is obvious from context.

Because 好き works differently from the English verb like.

In Japanese, 好き is grammatically closer to an adjective-like word than to a regular action verb. So the thing that is liked is commonly marked with が:

• 魚が好きです = I like fish
• 静かなほうが好きです = I prefer the quieter one

So in this sentence:

• 味付けが薄いほうが好きです = I like/prefer the lightly seasoned one

You may hear を好き in casual speech sometimes, but が好き is the standard pattern learners should use.

Yes. In many situations, 私は would be omitted because the speaker is already understood.

A very natural version would be:

大根のサラダは味付けが薄いほうが好きです。

Adding 私は makes the speaker more explicit and can add a slight sense of:

• as for me
• personally
• in my case

So it is not wrong; it is just more explicit than Japanese often needs to be.

A useful breakdown is:

• 私は = as for me
• 大根のサラダは = as for daikon salad
• 味付けが薄いほう = the more lightly seasoned kind
• が好きです = is what I like / I prefer

So the structure is basically:

As for me, as for daikon salad, the lightly seasoned kind is what I like.

That sounds a little stiff in English, but it shows the Japanese grammar clearly. A natural English version would be:

When it comes to daikon salad, I prefer it lightly seasoned.