Monday, August 23, 2010

How To Compost, Reduce Food Waste & Save The World


As I've slowly learned the basics of growing food at home, I've become increasingly impassioned by the origins of my food and the process that it undergoes to reach the dinner table; however It wasn't until I transformed my front yard from a muddy bank into a tiny but thriving vegetable patch that I gave any thought to the path that food takes when it leaves the kitchen.

Since the 1950's when large scale supermarkets and centralised food production became the norm, we've lost some of what was once considered common knowledge. Nowadays you rarely see people tending to their vegetable garden out in the suburbs or picking edible wild 'weeds' by the roadside. My sister practically lives on dehydrated 2-minute noodles loaded with MSG; the girl next door can't eat anything with a recognisable face; a little boy who lives across the road believes that everything he needs to live a healthy life resides in a packet of crinkle-cut chips.  

As a society we're spoiled rotten and our ethos has turned largely to materialism so it's no wonder that we're becoming increasingly detached from the origins of the very lifeblood of which sustains us. We've ceased to think of food as food should be. It's just another product that comes from only God knows where.

Food and paper, if left to nature, both decompose and return nutrients to the earth. It's terribly ironic then that food waste is the #1 least recycled material and it's absolutely horrendous to think that these two components combined, contribute to nearly 50% of all municipal solid waste. When buried in landfill, they're deprived of oxygen and begin the long process of anaerobic decomposition. This produces methane: a greenhouse gas, 21 times more potent than carbon dioxide. Food waste in landfill also results in something called leachate - a toxic chemical runoff which seeps deep into the earth to enter our drinking water.

Dumping food in landfill not only contributes to polluting our environment, but also detracts from precious nutrients that should be returned to the earth. Farmers are forced to use chemical fertilisers to replenish nutrients in the soil year after year, which itself poses a cataclysmic kaleidoscope of problems.

If you have a garden and even if you don't, there is something you can do. Reduce the amount of methane-producing waste you send off to join the millions of tons of compacted waste already in landfill. You can do this by composting your food scraps, plant debris, charcoal, paper, cardboard, toilet rolls, coffee grounds, even hair. Newspapers can be composted too since printing ink is soy-based nowadays. If in doubt, anything derived from something that was once living can be composted. In Sydney, 52% of the average household bin is compostable material. Some councils offer cheaper rates for rubbish disposal if you ask for a smaller garbage bin which could potentially be a huge money saver.

There are a few different options when it comes to compost.

The cheapest option (if you have a garden) is to mound up your scraps with grass clippings and dried leaves in one big pile. Thermophilic micro-organisms will heat up the pile and if you give it a mix (for aeration) once every week, in about 2 months you'll be left with a lovely rich compost. The heat produced with this method will effectively kill bacteria and weed seeds.

A compost tumbler is a fancy barrel fixed to a pivot that can be filled with material and aerated by spinning. It composts quickly but without reaching high temperatures.

Keeping a worm farm is a little more compact and neighbour friendly if you don't have a large garden space. All you have to do it place some moist coir (fibre from coconut shells) into the bottom, put a box of composting worms inside, give them some food scraps, a sprinkling of soil and a moist layer of newspaper over the top. Keep them out of the sun and rain. They'll eat their weight in scraps a day and any liquid produced can be diluted with 10 parts water and used to fertilise the veg.

The Bokashi Bucket is a relatively new system. Its design allows you to compost meat and fish which are usually avoided so as not to attract rodents or vermin. The bucket is able to be kept indoors or under the kitchen sink; the micro-organisms work anaerobically and the sawdust/bran mix sprinkled on top acts to absorb any unpleasant smells which may occur from the decomposing matter.

There is one more option that in my mind, is also the most efficient for home users: 
"NatureMill brings home composting to the mainstream user. It is essentially a miniature in-vessel kitchen composting system. NatureMill delivers an answer to the problem of space and labor for both traditional composting.. Waste is collected right where it is generated—in the kitchen. A computer controls the temperature, air flow, moisture, and mixing to accelerate the process and eliminate the backbreaking work. Everything is fully self contained in a modern, attractive container. Just a few square feet of floor space is required. No special plumbing or electrical connections are needed, other than a standard electrical outlet.. Best of all, NatureMill provides home gardeners with a source of rich, organic compost. And there is something uniquely satisfying about witnessing the entire food chain: from the garden, to the dining table, and back to the garden again.

All of these systems work by employing either worms or micro-organisms or both, to turn carbon and nitrogen-rich waste into beautiful, dark compost that can be added back to the garden. The benefits of composting are many. Not only does it act as a fertiliser, but the addition of organic matter also improves soil structure which enhances moisture and nutrient retention, increasing microbial activity.

Composting eliminates methane production in landfill but digging compost into the garden goes further through a process called carbon sequestration - atmospheric carbon dioxide is trapped in organic matter and buried. All plants need carbon and with a more readily available source for them to tap into, they'll have more energy to grow.

Scientists are looking to sequester carbon to counter global warming on an industrial scale in the future but we don't have to wait for years to make a difference. Do your bit by simple composting and help save the world, at home.


Tuesday, August 10, 2010

An Old Love, Crumbled


A few days ago I caught up with someone who was once a very special person in my life. Years have gone by since we last conversed but she's still the same striking, unconventional, deeply intelligent and self-possessed woman that I remember. It's strange - even after so much time apart we met again with the same comfort and ease. Amidst the frantic pace, I'd resigned myself long ago to the thought of never seeing her again. Together in the silences, sitting close enough to trace her hands, her face, her lips; I wanted so much to cast off my remaining inhibitions and blurt out "I've never stopped loving you".

Somewhere on the journey home I realised that occasionally a taste is required to remind ourselves of the things that we've always loved and momentarily forgotten.

After a long leave of absence, rhubarb crumble made a reappearance at the dining table to much delight, and perhaps, even a little surprise. It's been a while since I've given a humble crumble the time of day. I've come to consider it as a "fallback dessert" - possible to whip up with minimal ingredients and the most meager of tools.

Perhaps it was the crimson rhubarb, stems snipped from their crowns under drawing dusk; maybe the apples with their blanket of floral perfume were to blame, the mandarins, just fallen from their bowing branches; or the Madagascan vanilla, so sweet and seductive; that brought me back to appreciate this simple dessert.

Baked in the oven with a sprinkling of rapadura sugar for a boost of extra caramelisation and served while still warm with a zealous dollop of cold and tangy sheep's milk yoghurt, some old loves are truly worth pining for.


Rhubarb Crumble

a dozen stems of freshly picked rhubarb (20cm long)
1 fuji apple
2 mandarins, zested and juiced
castor sugar
unsalted butter
1 vanilla pod, split & scraped
all-purpose flour
a sprinkling of Murray River salt flakes
rapadura sugar
lots of sheep's milk yoghurt
Give the rhubarb a rinse and dry.
Finely slice stems and place in a small pot.
Dice the apple into small cubes and add to rhubarb.
Add mandarin juice to pot and cook over medium heat, stirring every now and then until apples have collapsed.
Add castor sugar to taste and cook for a few minutes until jammy.
Stir through mandarin zest and spoon into a ceramic dish.
Rub about half a cup of diced cold butter with a large pinch of castor sugar, a small pinch of salt, scraped vanilla seeds and enough flour to form a clumpy, breadcrumby consistency.
Sprinkle this over the rhubarb in a thick layer.
Sprinkle a little rapadura sugar over the crumble topping.
Bake for 30 minutes at 180ÂșC or until golden and bubbling.
Allow to cool for 10 minutes before serving with a generous amount of yoghurt.




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