Si no queda frambuesa, podemos poner un poco de almendra por encima del yogur.

Here quedar means to be left / to remain.

So si no queda frambuesa means something like:

• if there’s no raspberry left
• if we don’t have any raspberry left

This is a very common use of quedar in Spanish when talking about food, supplies, time, etc.

Examples:

• No queda leche. = There’s no milk left.
• ¿Queda pan? = Is there any bread left?

Because frambuesa is being treated as a mass noun here, not as individual raspberries.

In English we do something similar with words like chicken, onion, or almond when we mean the ingredient in general rather than separate pieces.

So:

• No queda frambuesa = There’s no raspberry left / no raspberry mixture left

If you meant whole raspberries as countable items, you would normally say:

• No quedan frambuesas = There are no raspberries left

Because si no means if not.

In this sentence:

• Si no queda frambuesa... = If there’s no raspberry left...

That is different from sino, which usually means but rather or except.

Compare:

• Si no queda frambuesa, podemos poner almendra.
  = If there’s no raspberry left, we can add almond.

• No quiero frambuesa, sino almendra.
  = I don’t want raspberry, but rather almond.

This is a very common spelling point for learners.

Because Spanish normally uses the indicative after si for a real or possible condition in the present or future.

So:

• Si no queda frambuesa, podemos poner...

This is a normal, realistic condition: if there isn’t any raspberry left.

A very useful pattern is:

• Si + present indicative, present/future/imperative

Examples:

• Si llueve, nos quedamos en casa.
• Si tienes tiempo, ven.
• Si no queda azúcar, compra más.

You would only use past subjunctive after si in more hypothetical or unreal situations:

• Si no quedara frambuesa, pondríamos almendra.

Literally it means a little almond, but in natural English it means a little almond as an ingredient or topping.

The singular almendra here works like a substance or ingredient name. Depending on context, it could mean:

• chopped almond
• ground almond
• sliced almond
• almond bits

Spanish often uses the singular like this when talking about food ingredients in a general way.

If you wanted to be more specific, you could say:

• un poco de almendra picada = a little chopped almond
• un poco de almendra molida = a little ground almond
• unas almendras = some almonds

Yes, definitely — but the meaning shifts slightly.

• un poco de almendra sounds like almond as an ingredient or topping in general
• unas almendras or un poco de almendras suggests actual almonds as separate pieces

So both can work, depending on what you mean:

• podemos poner un poco de almendra
  = we can add a little almond topping / almond ingredient

• podemos poner unas almendras por encima
  = we can put some almonds on top

The original sentence sounds a bit like recipe language.

Yes, echar could work too in many contexts.

• poner = to put
• echar = to add / pour / throw in

In food contexts, both are common:

• poner azúcar
• echar azúcar

In this sentence, poner sounds very natural because you are placing something on top of the yogurt.

So:

• podemos poner un poco de almendra por encima del yogur
  = we can put a little almond on top of the yogurt

With echar, it would sound more like adding it:

• podemos echar un poco de almendra por encima del yogur

Both are fine.

It means on top of the yogurt or over the yogurt.

The expression por encima de means roughly:

• over
• on top of
• above

In food contexts, it often means sprinkled over or added on top of something.

So:

• poner un poco de almendra por encima del yogur
  = put a little almond on top of the yogurt

Yes, but only slightly.

• encima de = on top of
• por encima de = over / on top of / over the surface of

In many everyday situations they are very similar. Here, por encima de can suggest spreading or sprinkling something over the top surface.

So in a food sentence:

• encima del yogur = on top of the yogurt
• por encima del yogur = over the yogurt / over the top of the yogurt

Both are natural, but por encima de can sound a little more like a topping being scattered across the surface.

Because de + el contracts to del.

So:

• de el yogur → del yogur

This contraction is required in standard Spanish.

The only common exception is when El is part of a proper name:

• de El Escorial
  not del Escorial

But here el yogur is just a normal noun phrase, so it must be:

• por encima del yogur

Yes, if you mean individual raspberries rather than raspberry as a general ingredient or mixture.

Compare:

• Si no queda frambuesa...
  = If there’s no raspberry left / no raspberry mixture left

• Si no quedan frambuesas...
  = If there are no raspberries left

So the singular and plural are both possible, but they create slightly different mental pictures:

• frambuesa = raspberry as a flavor, puree, jam, topping, or ingredient
• frambuesas = separate berries

Yes. Yogur is a standard and very common spelling in Spain.

You may also see:

• yogurt

But yogur is perfectly normal in Spain, especially in standard written Spanish. Learners should recognize both, but yogur is absolutely correct and very common.