Which burger chain uses the highest quality beef?

It's impossible to definitively say which burger chain uses the "highest quality" beef. Quality is subjective and depends on factors like:

* Breed of cattle: Different breeds have different flavor profiles and marbling.

* Sourcing: Where the beef comes from, how the cattle are raised, and the feed they receive all impact quality.

* Processing: How the meat is ground, seasoned, and cooked can also influence quality.

* Personal preference: What one person considers "high quality" might differ from another's opinion.

However, some burger chains are known for their focus on quality beef, including:

* Five Guys: They use 100% fresh, never frozen beef, ground daily in-store.

* Shake Shack: They use 100% Angus beef, sourced from farms that meet their strict quality standards.

* In-N-Out Burger: They use 100% pure beef patties, free of fillers or additives.

* Smashburger: They use premium Angus beef and smash their patties on the grill for a unique flavor.

* The Habit Burger Grill: They use fresh, never-frozen beef and offer a charbroiled flavor.

Ultimately, the best way to determine which chain uses the highest quality beef for you is to try them out and see which one you prefer. Consider factors like taste, texture, and how the beef is prepared when making your decision.