Use those last drops of cooking oil!

One of the annoying things about recycling food containers is that you’re supposed to get them relatively clean and rinsed-out before you put them in the recycling bin.  This is particularly difficult with cooking oil because it clings to the inside of the bottle, and it doesn’t mix with water to rinse out, and if you use soap to get it off then you get suds inside the bottle that drip out and make a sticky (still-oily) mess in the bottom of the recycling bin.  It’s also frustrating to see just how much oil is left in the bottle when you’re no longer able to pour out reasonable amounts for recipes–good quality oils are expensive, so I hate to see any amount going to waste!

I used to try to drain the last drops from the old bottle into the new bottle.  There are two problems with this.  One is that old oil, if it is getting on toward rancid, might spoil the new bottle.  The other is that it’s really difficult to balance one oily bottle on top of another, and if it falls, the oil will probably splatter around the room.

Now I’ve come up with two ways to use the last few drops of oil in the bottle!  When a bottle becomes too empty to pour from, remove and discard any shaker-top (if you can’t get it loose with your fingers, put a chopstick through the hole and push diagonally upward; this will remove any top that isn’t factory-sealed onto the bottle), put the cap back on the bottle, and set it aside for these two purposes:

  1. After washing dishes, turn the bottle upside down against the palm of your hand to get a small amount of oil.  Rub it into your hands to moisturize skin and cuticles.  Save money on hand lotion!
  2. After cleaning and drying a cast-iron skillet, turn the bottle upside down in the skillet.  Rub the oil into the skillet with your fingertips.  Let dry.  It will help to season your skillet to prevent food from sticking and prevent rust.  An almost-empty bottle will give you just about the perfect amount of oil for this purpose–it doesn’t take much, and if you use too much oil it can make your skillet gummy or rancid-smelling or attract dust.

I’ll admit that this is one of those times I’m posting good advice on the Internet to help me remember to follow this good advice myself!  At the moment we have four almost-empty oil bottles cluttering the counter next to the sink in our small kitchen!  I keep forgetting to moisturize my hands after washing dishes, until I’ve gone to bed and I feel my scaly dishpan hands snagging on the sheets.  I keep forgetting to remind Daniel (the usual skillet-scrubber in our home) to use the dregs of oil instead of new oil to season the skillets.  Let this be a reminder to both of us!

Visit the Hearth & Soul Blog Hop for more cooking-related articles!  Visit Works-for-Me Wednesday for more handy tips!  Visit Waste Not Want Not Wednesday and Fabulously Frugal Thursday for more ways to make the most of what you’ve got!

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About 'Becca
author of The Earthling's Handbook, about the environment, parenting, cooking, and more!

4 Responses to Use those last drops of cooking oil!

  1. Vickie says:

    Good advise! My mom has always used olive oil to moisturize her hands and face! Works better than some of those expensive facial creams!

  2. Thanks for sharing this valuable information regarding using the last drops of cooking oil to season frying pans and such.
    I save most of my bottles for recycling and repurposing as well. I am glad I found your post on the Hearth and Soul Hop.

  3. Great tips! Especially since we buy expensive organic olive oil and I hate losing even a drop!
    Thanks for sharing on Waste Not Want Not Wednesday :)

  4. pmoppins says:

    Those are great ways to use up that last little bit of oil. And you’re right, it is the PERFECT amount for seasoning cast iron.

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