Owning a dishwasher is a blessing, mostly, saving time and tedious scrubbing. But even us lucky dishwasher people must face a hard truth: Some things just have to be washed by hand. If you use nonstick pans, wood utensils, stainless steel, cast iron, high-end chef’s knives, or fine stemware — and you want that stuff to actually last — you gotta get to scrubbing. (Of course, if you don’t own a dish...