Upcycled a surplus koozie into a new sleeve for my coffee jar. (The large glass mason jar gets hot to the touch when filled with coffee. I make my coffee by pouring hot water from the kettle through a reusable filter basket placed on top of the big glass mason jar.) (Photos here on my Deep Green Facebook page.)
The final photo shows a previous koozie upcycle project: the custom sleeve that I made awhile back for my enameled metal coffee mug. I made that one from a surplus/landfill diversion koozie as well.
The bottom of the coffee mug’s sleeve, which you can’t see in the photo, is a circle cut out from the material of the original koozie. I then crocheted a few rows of double crochet to attach the circle to the main body.
BTW this morning my coffee water was not quite hot enough for my tastes. I don’t boil it all the way; I stop just short of boiling.
Both the electric kettle and the stovetop kettle have certain distinctive sounds they make as water is on the way to boiling, and with both methods, I can hear when the water has reached just the right degree for my taste. (It doesn’t take very long to learn this. Maybe you have had a similar experience.)
But, with the little outdoor butane campstove I’ve been using lately, I hadn’t yet learned to determine either with my eyes or ears when the water is exactly hot enough for me. This morning’s ended up stopping a little bit short. The coffee was still rich and tasty but it didn’t stay hot as long as I like it to.
I got curious and searched for an article about the stages of boiling water. This is a really cool, detailed description. And written in a very entertaining style. It’s from a blog called Serious Eats.
Based on this article, I will be able to tell when the water is just hot enough.
Everything You Ever Wanted to Know (Plus More!) About Boiling Water https://www.seriouseats.com/how-to-boil-water-faster-simmer-temperatures
How often have you wondered about the hidden complexities of what happens when a pot of water comes to a boil? Here’s the answer. BY J. KENJI LÓPEZ-ALT
By the way, speaking of cooking and fuel, I learned back in 2006 during my intensive studies about solar cooking and renewable energy that cooking fuel can constitute a huge percentage of a household’s budget, or labor typically women’s labor, or both. There is a surprisingly large differential of fuel between water that’s about 180° and water that’s boiling.
Some people really have to have literally boiling coffee or tea, but a lot of us don’t feel we need it. So learning how to identify when our preferred temp has been reached can be a useful way to save fuel when fuel becomes scarce. For now, of course, I have the luxury of being able to do this as an experiment. I’ve been practicing this for years and it’s very satisfying.
If you are interested in this aspect of home economics, you might enjoy checking out the highly informative website of the Kerr-Cole Sustainable Living Center in Snowflake, Arizona. https://solarcooking.fandom.com/wiki/Kerr-Cole_Sustainable_Living_Center
I see they also have a Facebook page. By the same name.
I read or heard somewhere that a couple who lived there had made a small propane tank last like a year and a half by adding solar cooking and haybox cooking method to their cooking repertoire.
Haybox cooking is extremely easy, it’s a useful tool to add to your sustainable cooking toolkit, and I have written about it on my blog elsewhere.
Another fantastic resource for detailed learning about solar cooking, haybox cooking, twig-fired Rocket stoves etc is Aprovecho Research Center.
Aprovecho’s “Capturing Heat” publications teach how to build five simple appliances for solar and biomass cooking and heating.