a delightful , if minor , pastry 
(ROOT (NP (DT a) (ADJP (JJ delightful) (, ,) (SBAR (IN if) (FRAG (ADJP (JJ minor)))) (, ,)) (NN pastry)))
(ROOT (NP (DT ) (ADJP (JJ ) (, ) (SBAR (IN ) (FRAG (ADJP (JJ )))) (, )) (NN )))