As a career-long cook, I can say that there are a few kitchen tasks I’ll forever avoid if I can help it, and one of those is using a butter knife to stir up a brand-new jar of natural peanut butter.

If it’s true that you are what you eat, I’d guess I am about 10 percent peanut butter. I can’t resist peanut butter’s decadent nuttiness as well as its nutrient-dense appeal. Besides its ...