The ubiquitous KitchenAid stand mixer—domestic icon, home cook must-have, subject of tattoos and even master’s theses—has rarely been controversial. Content to sleep tucked away within cabinets waiting to make cookies or birthday cakes, this century-old staple has garnered little public criticism for anything other than its price. (The standard 5-quart tilt-head Artisan costs $350; stand […]