For those of us who love some zest and spice, it’s always difficult eating at that relative or friend’s place who refuses to add even a grain of salt or dust of pepper to their meals. These people have clearly never used their tastebuds before, and it shows. Still, it’s worth acknowledging that this is a rather pretentious thing to think; you should always just be grateful that someone cares enough to cook you a meal at all. Cooking is an investment of time, and—unlike some ingredients—time doe…