The break­fast busi­ness is about to get even more crowd­ed, as fast-food chains make a renewed push for the fick­le morn­ing cus­tomer.

Wendy’s Co., which does­n’t serve break­fast nation­al­ly after pre­vi­ous attempts floun­dered, is try­ing again. It joins Shake Shack Inc. and an increas­ing num­ber of fast-food chains in try­ing to cap­ture more busi­ness in the morn­ing. McDon­ald’s Corp., Burg­er King, and Dunkin’ Brands Group Inc. also con­tin­ue to make break­fast a pri­or­i­ty.

…