Photo: Tiia Monto, CC BY-SA 3.0, via Wikimedia Commons
If you've ever preheated an oven for the first big bake of the season and been greeted with a smell of old pizza and smoke, you already know why this job belongs in early November. Whatever is stuck to the bottom of your oven will burn again the moment you crank the heat for a turkey, and the smoke alarm will probably pick that moment to make itself heard.
The fix I'd reach for first costs less than a coffee: baking soda, water and a night of patience. It won't do everything, and I'll get to where it fails. But for an ordinary greasy, spattered oven it's hard to beat.
Why baking soda works on oven grease
Baking soda is mildly alkaline, and alkaline cleaners help break down fats so they lift off a surface. That's the same basic reason commercial oven cleaners work, except those use much stronger chemicals, which is why they come with gloves and warnings. Baking soda is gentle enough that it needs time to do what the strong stuff does in minutes. The paste also keeps moisture against the grime for hours, softening it, and when you scrub, the fine grains act as a mild abrasive.
You may have seen the vinegar step sold as some kind of cleaning magic. It isn't quite. Vinegar and baking soda react and fizz, which helps lift the residue out of corners and makes the wipe-up easier, but the reaction also neutralizes them both. I use it mainly because it clears away the white film at the end.
How to do it
Safety first. The oven must be off and completely cold. Wear rubber gloves, because a whole evening with your hands in baking soda will dry out your skin. Keep the paste off the heating elements, and off the gas ports if you have a gas oven. Don't mix any of this with bleach, ammonia or commercial oven cleaner. If you can't reach everything safely, leave that part.
Take out the racks and anything else inside. Soak the racks in a sink or bathtub of hot water with dish soap for at least an hour. (Put an old towel down first if you're using the tub, since the racks can scratch.)
Sweep out loose crumbs and burnt bits with a dry brush or damp cloth.
Mix about half a cup of baking soda with water, adding it a little at a time, until you have a thick, spreadable paste.
Spread it over the oven floor, walls and inside of the door, leaving the heating elements and door seal alone. It'll turn brown in patches, and that's normal.
Leave it for several hours. Overnight is better if the oven's in rough shape.
Wipe away the dried paste with a damp cloth, using a plastic scraper for stubborn spots. Avoid steel wool on enamel, because it can leave scratches.
Spray white vinegar over any remaining residue, let it foam, and wipe it down with a clean damp cloth.
Scrub the racks, rinse them, dry them and put them back.
The wiping takes longer than you'd like. Change your water often, or you'll just be moving a grey film around.
When it doesn't work
Baking soda is good at grease and sticky spills. It is much less good at hard black carbon, the shiny crust left by something that dripped and burned repeatedly. A second round overnight can help, and so can gentle work with a plastic scraper, but sometimes that patch is staying. As long as it isn't smoking, I'd let it go and cover the worst drips with a tray next time.
Check your manual if your oven has a textured, speckled interior. Some older "continuous clean" liners are designed to burn off spatters on their own, and scrubbing or pastes can damage them. The same goes for any special coating the manufacturer mentions.
For a very light clean, there's an easier trick. Put a heat-resistant bowl of water in the oven, run it on high for about 15 minutes, switch it off, let it cool, and wipe away the softened grease with a silicone spatula.
Why I'd skip self-clean this month
Self-clean mode looks like the obvious shortcut, and it works by heating the oven to about 800 to 900°F until the mess turns to ash. A cycle runs from one to six hours depending on the model and how dirty it is, and many doors lock until the oven cools.
There are good reasons not to run it right before a holiday. All that heat is hard on an oven, and appliance repair companies often warn about running it shortly before you depend on the thing. It can also produce smoke and small amounts of carbon monoxide, so if you do use it, open the windows, run the hood fan and make sure you have a working CO alarm. Remove the racks, wipe out loose grease first, stay home during the cycle, and keep children and pets well away from the hot door. Bird owners should take extra care, since birds are especially sensitive to fumes. If a fire starts inside, leave the door shut.
If your oven has a steam-clean setting, that takes about an hour at a lower temperature and suits light jobs better.
Keep it clean until the pie is out
Once it's clean, put a sheet pan on the rack below anything likely to bubble over. Avoid lining the oven floor with foil, which many manufacturers warn against because it can damage the surface. And if something does spill, wipe it once the oven has cooled, before it gets baked on a second time.
See more of us on GoogleAdd Hacks Detective as a preferred source and our stories can show up more often for you in Top Stories.
