Birchtree Bread Co. partners with B.T.’s Fried Chicken and BBQ in Worcester to create ‘a sandwich of epic proportion’ Updated 8:35 AM; Today 8:35 AM B.T.s' Fried Chicken and BBQ collaborated with BirchTree Bread Co. in Worcester to created a fried chicken sandwich on a croissant. Facebook Share Add Birchtree Bread Co. and B.T.’s Fried Chicken and BBQ to the all-time list of dynamic food duos after the Worcester restaurants unveiled a collaboration on a new sandwich on Tuesday. B.T’.s describes the creation as ‘a sandwich of epic proportion.” It features fried chicken from B.T.’s smothered in pimento cheese and squeezed between a sliced croissant from BirchTree Bread Co.