The butter not only adds richness to the burger and prevents it from drying out, but it also butters the bun for you. We're not going to downplay it, these burgers are decadent. But, if you're going to eat a burger, you may as well do it right. And, this recipe does it so right.
The word persistence means the quality of being determined to do or achieve something. It's tenacity. It means firmness of purpose. It is a continuing, repeating or lasting of something. Use the link and read a few similar definitions.
The Discipline of Persistence: 1  The greatest test of self-discipline is when you persist in the face of adversity, and you drive yourself forward to complete your tasks 100%, no matter how you feel. 2  Your persistence is the measure of your belief in yourself, and in what you are doing.