Le pongo un poco de miel al yogur natural.

Le is an indirect object pronoun. In this sentence, it refers to al yogur natural.

So Spanish is literally structuring it like I put a little honey to the plain yogurt. In natural English, we would usually say I add a little honey to plain yogurt.

A key point for learners is that le does not have to refer to a person. It can also refer to a thing when that thing is treated as the recipient of the action.

Yes, they are referring to the same thing, and this is very normal in Spanish. It is called clitic doubling.

Spanish often uses:

• an indirect object pronoun like le
• plus the full noun phrase like al yogur natural

So:

• Le pongo un poco de miel al yogur natural
  is a very natural Spanish structure.

In English, this kind of doubling usually sounds unnecessary, but in Spanish it is common, especially with indirect objects.

Because a + el contracts to al.

So:

• a el yogur natural → al yogur natural

This is the same kind of contraction as:

• de + el → del

So al simply means to the here.

In this kind of food-related sentence, Spanish often uses the pattern:

poner + something + a + food/drink

For example:

• poner azúcar al café
• poner sal a la sopa
• poner miel al yogur

English does not match this word for word. Depending on the situation, English may say:

• to
• in
• on

So it is better to learn this as a Spanish pattern, rather than trying to translate the preposition exactly every time.

Pongo is the first person singular present indicative of poner.

That means:

• poner = to put / to add
• pongo = I put / I add

It is an irregular yo form:

• yo pongo
• tú pones
• él/ella pone

Spanish usually drops the subject pronoun, so pongo by itself already means I put / I add. That is why there is no need to say yo pongo unless you want emphasis.

Yes, poner often means to put, but in food and everyday contexts it can also mean to add.

So here, pongo un poco de miel is naturally understood as:

• I put in / I add a little honey

In Spain, this is very normal language for ingredients or toppings. Other verbs are possible too, depending on style:

• añadir = to add, a bit more formal
• echar = to throw/pour/add, also very common in everyday speech

But poner sounds completely natural here.

Un poco de means a little or a bit of.

So:

• un poco de miel = a little honey

This structure is very common with uncountable nouns or substances:

• un poco de agua
• un poco de azúcar
• un poco de sal

Notice that after un poco de, Spanish normally just uses the noun directly:

• un poco de miel not
• un poco de la miel unless you mean a specific honey, such as a little of the honey you bought

In Spain, yogur natural means plain yogurt.

Here natural does not mean natural in a broad marketing sense. It specifically means plain, meaning not flavored, not sweetened, and usually without added fruit.

Also, Spanish adjectives often come after the noun, so:

• yogur natural = plain yogurt

This is the normal order in Spanish.

Yes. Spanish word order is more flexible than English word order.

You could also hear:

• Al yogur natural le pongo un poco de miel.
• Le pongo al yogur natural un poco de miel.

These versions keep the same basic meaning, but they shift the focus slightly.

The original sentence,

• Le pongo un poco de miel al yogur natural
  is perfectly natural and straightforward.