Heart of the system is aquaponics. Fish and veg in closed water loop. Some internal waste from the plants, plus wheat bran, become food for insect larvae. They

Heart of the system is aquaponics. Fish and veg in closed water loop. Some internal waste from the plants, plus wheat bran, become food for insect larvae. They make up to 40% of the fish feed. We complement the feed with locally grown mussels, which take nutrients back from the sea, into the system. Instead of a nutrient loop that stretches across half the world (for example phosphor from Morocco to Brazil, chop down rainforest to grow soy, soy to fish feed for Norwegian salmon, dump the excess nutrients in the sea), we can create a local/regional nutrient loop, with extremely little leakage to the ecosystem. It will look different for a smallholder in a poorer country, you have to research, but I think it did possible there too.