Cooking for two

Maybe it's just me, but I find food packaging doesn't really take couples into account. Take a loaf of bread for example - too big for just a couple. Most of the time, half the loaf goes in the garbage once it goes stale. Mayo - the 750ml jar is the best value (millilitre for millilitre), but the "bad food bugs" get the best of the jar before we ever do. Sure the tiny jar would be more practical, but it's 80% of the price of the next size up while only containing 40% of the contents. Bacon is another example - too much for just 2 people. My biggest beef (no pun intended)? Ground beef. Most recipes call for a pound of the stuff (453 grams), but grocery stores insist on packaging it in 600-800 gram amounts.