If you want to know why Bun Bros is so popular, you just need to look at the ingredients they use. Bun Bros source the best Irish beef, succulent chicken breast and delectable pork and bacon, and use fresh, locally-sourced lettuce, tomato and pickles, cheese from Cork and artisan brioche buns. Then there’s the extra crispy French fries from Irish potatoes all finished off perfectly with exotic spices and herbs from all over the world.