wa alaykum salam wa rahmatullah,
Yeah in a supermarket sister. It is halal according to the Quran and Sunnah.
There is nothing wrong with eating bread made with yeast. The yeast (khameerah) that is added to the dough does not come under the heading of khamr (intoxicant) that is haraam, and does not have any effect of causing intoxication or languor, especially since cooking it with fire alters the yeast completely, so that it no longer has any effect.
Shaykh Muhammad ibn Saalih al-‘Uthaymeen (may Allah have mercy on him) was asked:
How should we respond to the ruling on the yeast that they put in flour to help leaven it and make it easy to cook, as some people say that it is khamr and it is not permissible to use it?
He replied:
My response to that is that there is nothing wrong with putting yeast in the dough for the purpose of leavening it, because this does not affect it at all. Moreover, I do not think that this yeast would cause intoxication if a person were to eat it. The basic principle concerning all foods and drinks and clothing is that they are permissible, unless it is proven that they are haraam, because Allah, may He be exalted, says (interpretation of the meaning):
“He it is Who created for you all that is on earth. Then He rose over (Istawa) towards the heaven and made them seven heavens and He is the All-Knower of everything”
[al-Baqarah 2:29].
So there is nothing wrong with putting yeast in the dough to leaven it.
Fataawa Noor ‘ala al-Darb (tape 70, side b)
And Allah knows best.