Hot answers tagged

11

I live off-grid, so I did a lot of study on this topic. All used coffee grounds make good fertilizer. Drip machines seem to use a lot of energy, and they seem to use it for a lot of time. They also use disposable filters. Drip machines are kind of on the off-grid "blacklist". Percolators waste a lot of energy because they have to keep the water boiling ...


10

Solar thermal Given your limited criteria, solar thermal is in fact the ideal solution. I assume you say that "[solar] heating is so inefficient and the materials for solar panels introduce a can of worms sustainability", you refer to PhotoVoltaic panels, and not solar concentrators (mirrors and lens), which are silly cheap and sustainable. A large ...


7

Your grinder may be less efficient than a commercial unit, and shipping beans rather than ground coffee may affect the bulk for shipping. If you use extra (hot) water in washing a permanent filter you may be better off using unbleached paper filters and composting them along with the grounds. I find that you can't put lots of coffee grounds through a ...


7

From the Encyclopedia of Country Living by Carla Emery, which I cited here before and can warmly recommend to anyone: This makes about 5.5 sqm per kg of rye (grain or flour, doesn't really make a difference).


5

I'd suggest getting a high-quality enamel baking dish - enamel/ceramic, in my experience, is much better at being "non-stick" than Teflon, lasts a lot longer, as well as avoiding the potential risks of the latter. That way you won't need to line it, thus avoiding the foil.


5

Cold brew, which is essentially soaking the beans for 24 hours would only call for energy to roast the beans and to filter them. If you used a metal filter, there wouldn't be ongoing disposable costs, but some quantity of energy is needed to create the metal filter. If you used the lightest roast, that would minimize the the energy used in roasting. In ...


5

I'm going to focus my answer on 'recycling' the wastes and let someone else answer how to reduce kitchen waste. If your municipality doesn't collect and process kitchen and garden wastes then you can start composting (a lot of) the kitchen waste yourself. Basically you have 3 options: 'Regular' composting: create a compost pile or setup a compost bin in ...


4

Another idea is to reuse your wasted veggies and turn them into the food source for more food for yourself. We own chickens, who will eat almost anything. Here is a good chart to figure out how to recycle your table scraps into food for something that in return provides food for yourself. There are several types of fish you can also grow in small(er) ponds (...


4

A study recently published in Resources, Conservation and Recycling journal provides evidence that meal kits have a smaller carbon footprint than grocery shopping. From the study "Comparison of Life Cycle Environmental Impacts from Meal Kits and Grocery Store Meals": on average, grocery meal greenhouse gas emissions are 33% higher than meal kits (8.1 kg ...


3

I want to frame-challenge your assumption that aluminum is a poor choice due to difficulties in recycling. The linked question refers to "aluminum food packaging" such as soda cans, which is a composite of aluminum and epoxy. The epoxy is there to protect the aluminum from the food, and the food from the aluminum. Aluminum foil is a different deal. ...


3

Cast iron, correctly seasoned and maintained, is very effective at providing a non-stick surface. Many cast iron pans are available "pre-seasoned" but this cannot generally be relied upon to be a complete seasoning. Regardless, periodic re-seasoning (and correct use in the interim) is required. Re-seasoning involves a thorough cleaning to remove the old, ...


3

There is cookware that uses insulation for cooking, not quite in the way you envision, but close enough. I'm referring to a cooker Thermos Shuttle Chef, popular in Japan (as シャトルシェフ). It's an ordinary pot, but comes with a well-insulated case. You cook rice, for example, for 8 mins. (on an ordinary stove—no insulation, yet) and put the whole pot into the ...


3

TL;DR Get your coffee beans with rainforest alliance certification Drink it black or with non-dairy whiteners Full answer: I think the points you mention are relatively trivial compared to the big things: Where the coffee comes from and how it is transported If you add milk Professor Mark Maslin and PhD student Carmen Nab have analysed the environmental ...


3

If you are able to heat the oven from a renewable source (like solar energy, wood, biogas), this would be most efficient way to do it in terms of CO2-emmissions. Often, this is not possible. Then you have to choose basically between an electical and a gas stove. In this case, a gas stove is best, as long as less than 70% of electricity comes from renewable ...


2

Put the broccoli in a microwave safe bowl with a few tablespoons of water, cover the bowl with a microwave safe top (ideally maybe a glass lid, but if plastic, don't let it touch the food!). Then microwave it. Guaranteed less energy, and you don't lose significant nutrients into the water you'd be boiling it with either of the other two ways.


2

Stovetop vs water heater efficiency A gas stove-top is about 44% efficient (source), and a modern natural gas water heater with a tank is up to 67% efficient (source (pdf)). Basic formula From this answer on Chemistry.SE, the energy needed to heat a liquid from one temperature to another is: Q = (mass)*(specific heat)*(change in temperature) For water, ...


2

This answer won't cover all cases, but when you are cooking with water it starts boiling at roughly 100 degrees and won't get any hotter (unless you boil it dry). Unless you're steaming, cooking a reduction or need the vigorous motion of water boiling hard, you may as well turn down the element at that point to save energy. Often foods don't cook until ...


2

If the toaster oven is an option, it would generally be more efficient than a full-sized oven (unless the toaster oven is on it's last legs and the oven is a brand-new version, or something to that effect). Because the toaster oven is much smaller, it would require much less energy in order to create enough heat to cook your food, whereas the full-sized oven ...


2

Propane releases 59 kg CO2/GJ, which works out to ~0.06 g/BTU. On a 70000 BTU grill, that's 4000 g, or 4 kg, or 8.8 lbs CO2 per hour. Natural gas releases 49 kg CO2/GJ, or about ~0.05 g/BTU, or 3500 g, or 7.7 lbs CO2 per hour. There's are a lot of variation in types of charcoal due to different binders used, but consensus it's that about double natural gas....


2

TL;DR: power saving with a lid comes from the fact that you can use a lower power-mode on your cookstove. Energy used to bring the water to the boiling point is roughly the same with or without the lid, energy saving occur after that point. Full answer I'm afraid that the question and the current discussions are quite ambiguous on one capital point. In ...


1

Just a matter of money; you can boil all the water you want with enough focusing solar collectors . There is an installation ( maybe more) in AZ (?) that melts metal with this method. Reliable,good ,safe, small ,etc are all a matter of judgement.


1

Not possible to recycle foil everywhere, here in Ireland for instance. Because it is not clean before going to the centres for recycling. The same applies to cling film, which you have another name for. While storing food we use a plate or saucer to cover cooked food. In the oven or grill we use a lid or if the worst comes to the worst, me or the dish-...


1

There is quite a range of different meal kit services. To subscribe means to take that service for a longer period. We (in Germany) have different services. Some of those services just provide a weekly box of vegetables, potatoes, etc. with recommendations for recipes. That is ok, but leaves you with the decision to take what you like according to your ...


1

The page HealWithFood describes four alternatives to Teflon and declares: "The manufacturing process for PTFE (Teflon) cookware uses a chemical called perfluorooctanoic acid, or PFOA, which has been shown to contribute to the development of certain types of tumors in laboratory animals and which seems to increase the risk of thyroid disease in humans. PFOA ...


1

Any water heater built in the last 10 years will be significantly more energy efficient than your stove. At the same time you might want to consider a number of other variables if you are really into crunching the numbers on this. 1) you mentioned that your pipes are not insulated but didn't say how much pipe the water travels through before reaching your ...


1

For your health you should consider the best ways to produce and recycle filter paper. "The problem with French press and other types of unfiltered coffee techniques lies with blood lipids. Compounds from coffee can raise total cholesterol, triglycerides and bad LDL cholesterol (European Journal of Clinical Nutrition, August 2012). The culprits are in ...


1

First of all, if you really want to cook green you should buy neither and instead go for a solar oven or solar cooker (more info on this on Wikipedia). However, if you live in a place where it is often cold and clouded then this isn't very practical. Now, back to your question about ovens. There are two ways of looking at this: How much energy and other ...


1

For casual use, have the feed come in at a slope to the burn chamber allows the stove to self feed as the ends burn off. The burn chamber has to be large enough for the heat to start pyrolizing the wood chunks. If the chimney is the same diameter as the feed tube it's harder to get a balance of air speeds that will keep the fire from moving up the feed ...


Only top voted, non community-wiki answers of a minimum length are eligible