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.
Source/Notes: Variant: Permanence, persistence is the first condition of all fruitfulness in the ways of men. The 'tendency to persevere,' to persist in spite of hindrances, discouragements and ' impossibilities:' it is this that in all things distinguishes the strong soul from the weak.. From: Past and Present (1843), Book IV: Horoscope, Permanence. Facebook.