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KitchenAid mixers hide the year they were built in the serial number, and some from the 1980s still run daily

Before you microwave leftovers in a plastic tub, check for this label

Your Ball jars carry a logo that dates them to the decade, and the blue ones are the ones to check first

A piece of chalk in the silverware drawer, what it’s for and why it keeps the forks from tarnishing

The notch at the base of your chef’s knife has a name and a job most home cooks never use

Before you add anything to your mop water, check what your floor maker says

Neither oven cleaner nor steel wool, the two-ingredient paste that lifts the brown off old baking sheets

Not bleach and not vinegar, the way to get black mold out of a fridge door gasket for good

The black olives in your pantry started out green, and one word on the can is how you can tell

Every kitchen had an avocado-green version of this in the 1970s, and thrift stores now price it accordingly

Don’t toss the seeds from your jack-o’-lantern, 30 minutes at 300°F turns them into a snack

The number on your Le Creuset lid isn’t a model number, it’s the size in centimeters, and it explains the price

A dishwasher tablet in the sink dissolves range hood filter grease while you cook dinner

Pantry moths don’t come from your cupboard, they come home in the groceries, and this is what to freeze first

Never mix vinegar and hydrogen peroxide in the same bottle, health officials warn

Should you leave the dishwasher door open after a cycle, appliance techs give a clear answer