There may well be a perfect compost ratio green : brown, but compost in any proportions of green and brown will still decompose; it just takes longer. I have a one acre garden and nine compost heaps and none of them is the optimum five feet high. They work fine at just two feet high. I do not measure green and brown ratios either. When I have a bucket of vegetable peelings I throw it on. When I cut the grass I empty the mower’s grass collector onto the compost heap.
I am almost certain that this is what almost everyone in the real world does. I can understand the logic and that higher compost piles reach higher temperatures, but no way am I going to turn over a five foot high, two ton pile of compost in one day.
I even keep my leaves in separate compost bins rather than mixing them in the perfect 50:50 ratio with my mostly green compost.
Theoretically you need a three inch layer of green compost then a three inch thick layer of brown compost like leaves or wood chips. Where do all these compost obsessives keep their four cubic feet of green compost and four cubic feet of brown compost until they have enough for a three inch thick layer? They could have eight cubic feet of compost sitting around instead of decomposing.
Compost heaps are simple. Let’s keep them simple, that way more people will make their own compost heaps. The perfectionists just put people off. All you really have to so is to throw all kinds of raw vegetable matter and eggshells onto your compost heap. Leave it for three months and turn it into an empty bin alongside. Repeat after another three months and your compost should be ready. If it does not look like ground peat at this stage, just turn it again and in three more months it will be ready.
Most people have very little space to accommodate compost heaps. Divide what space you have into three bins using half pallets. Fill the middle bin until it is full; turn it over into an adjacent bin. Start filling the empty bin furthest from your turned compost with your next batches of peelings and grass cuttings. Doing it this way means you always have an empty bin to turn your compost into.