ALERT: Bakeries in the NY Metro area may be using the same ovens for Dairy & Parve with a proper supervised kosherization. They are Ben yomoi & not even doing a "libun-kal".
Therefore before purchasing in a bakery that also does Dairy, ask if they have seperate ovens? If not, don't buy there. If it's a Hisachdus CRC bakery & they do dairy, you don't have to bother to ask-take your business somewhere else.
NOTE: There is "bi-ein" on the oven floor & sides, etc even when it's in a waterpan.
The Hisachdus CRC rely on the goy to decide which "glazing & brush" is for dairy & which is for parve.
NOTE: The Orginizsias Hashguchas like the OU, don't allow such a set up. So why use Hisachdus if you could upgrade & use OU?
If there is a Hisachdus CRC, the OU doesn't bother checking up as they rely on Hisachdus CRC. That's a shameful lack of responsibility.