Agreed that McD burgers are gross, but according to their website, they are 100% beef with no fillers.You want to make sure the burger is 100 percent beef tho. MCDS probably has sugar and binders (bread/flour) in their burgers. Wendys is the best keto option. The triple baconator with no buns and no ketchup, mayo packs on the side and lettuce buns is my go to in a hurry meal. Its a ton of meat on meat with cheese and mayo so it may not be the most health thing in the world but it is keto.
My bunless burgers are generally made by me at home.