Because of my finding that butter improved my mental speed, in 2012, Dustin Lee, a programmer in Bozeman, Montana, decided to try eating lots of butter. He thought he’d do it for a month.
He ate a half-stick (2 ounces = 57 grams) every day. Nothing fancy: Kirkland Salted Sweet Cream Butter. At first it was repulsive. He had trouble eating it. He ate it with other foods, such as soup or pancakes. Or he would take lots of tiny slices (without other foods). It felt like more butter than he wanted.
After about two weeks of this, however, he decided this is pretty good. He was enjoying it. He began looking forward to the slices. He made them larger. He prefers the butter hard, straight out of the fridge. He now enjoys eating the fat on meat. He stopped limiting how much animal fat he eats. (His wife still cuts it off meat.) Now he gets lots of fat from lots of sources. Butter is the easiest source.
His children (7 and 9 years old) don’t eat butter directly, but he allows them to eat as much as they want. They eat a lot more butter than other children. At other people’s houses, he jokes about it. Incidentally, he tried taking Vitamin D3 in the morning (around 7 am) but it made him so sleepy in the evening he stopped.
This impressed me. I’d been eating a half-stick of butter per day for a few years (half as much was less effective), but I always ate it with a little bit of meat, e.g., sliced roast beef (Berkeley) or roast pork (Beijing). That was less than ideal because I kept running out of the meat. I started eating it Dustin’s way (straight) and found it’s fine. It’s like dessert, halfway between ice cream and cheese.