Question Summary:
Christmas Breathis

Question Detail:

Nowadays in my country a bread is sold called christmas breathis same bread is sold the entire year
And at eid it is called eid bread 
 
Is it allowed to buy them
Its made by a jewish bakery

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
You state that the bread is called “Christmas breathis”, and during Eid time it is called “Eid bread”.  As Muslims, we are sensitive to our Beliefs. In order to advise on the query in reference, answer the following.
Is there anything special that distinguishes it from other days for it to be named different on such occasions? Is there any marking on the bread “Christmas bread”?
And Allah Ta’āla Knows Best
Safwaan Ibn Ml Ahmed Ibn Ibrahim 
Student Darul Iftaa
Limbe, Malawi
Checked and Approved by,
Mufti Ebrahim Desai.