I asked same question almost two months ago to the owner of this market and he told me that beef and mutton is being supplied by Oklahoma supplier and it is hand slaughtered. He told me name of the supplier too but I don't remember it now. As per owner their chicken is supplied by Crescent chicken.
I do my know who supplies their meet because I do not care they have good fresh meet and lot of Lebanese products that we use they sell halal meet but that does not concern me I know it is fresh they get it twice a week
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