Would

A: Which of the following sentences would be is the correct one?
B: It's time to place an order for food. Would you recommend Biriyani?

Are these sentences correct? Yes, but A is more natural as edited above.

I agree with Clive, but really more context is needed to judge (A). There may be some good contextual reason for "would" (e.g. an implied conditional) or there may not.

GPYI agree with Clive, but really more context is needed to judge (A). There may be some good contextual reason for "would" (e.g. an implied conditional) or there may not.

I used it to mean politeness. Still not correct?

AnonymousI used it to mean politeness.

It is not a matter of politeness, unless of course, you have financial interest in that restaurant.
Polite request:
Would you recommend Biriyani to all your friends, acquaintances and relatives?

Implied conditional:
Would you recommend Biriyani?

AlpheccaStars AnonymousI used it to mean politeness.It is not a matter of politeness, unless of course, you have financial interest in that restaurant. Polite request: Would you recommend Biriyani to all your friends, acquaintances and relatives?Implied conditional: Would you recommend Biriyani?

So, what is the if clause?

AnonymousSo, what is the if clause?

If I asked you to recommend a good place to eat, would you recommend Biriyani?

We usually do not articulate if-clauses that are obvious from the context.

AlpheccaStars AnonymousSo, what is the if clause?If I asked you to recommend a good place to eat, would you recommend Biriyani?We usually do not articulate if-clauses that are obvious from the context.

But could I also use the same sentence to be polite? 'Would you reccomend Biriyani?' Instead of 'do you recommend Biriyani?'

AnonymousI used it to mean politeness. Still not correct?

I suppsoe it's possible, but you shouldn't routinely insert "would" to be polite. It is not a routine, all-purpose method of adding politeness to an utterance.

In spite of the capitalization, I think the OP is using "Biriyani" to mean the rice dish, not the name of a restaurant.

CJ

CalifJimIn spite of the capitalization, I think the OP is using "Biriyani" to mean the rice dish, not the name of a restaurant.CJ

Yes. It's a dish.