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Hardwood Ash
The grey-white ash left when clean hardwood burns completely is the starting point for lye and soap, potash, ash glazes and nixtamal, and a garden lime. Its largest part is calcium carbonate, with potassium salts, and it is alkaline: wet ash stings the skin.
Only clean wood: never painted, treated, glued or mixed with rubbish. How much ash a load of wood gives varies with the species and how much bark is on it, so weigh both and find out.
Oqalayo
1 day, plus 3 days cooling
Imiyalelo
1
1
Weigh the wood
Weigh the wood
Weigh dry, clean hardwood logs such as oak, beech, ash or maple. Note the weight.
Izinto zokwakha zalesi sinyathelo:
Izigodo zomuthi olukhuni (i-oki, i-mapula, i-beech)20 kgAmathuluzi adingekayo:
Isikali2
2
Burn it down
Burn it down
Light a fire in a clean fire pit with tinder and kindling, and feed it the weighed logs. Keep it burning until no black charcoal is left, only grey-white ash.
Izinto zokwakha zalesi sinyathelo:
Isithungu sokuvuthela umlilo1 ucezu
Okokubasa nezinti ezincane1 ucezu
Umentshisi1 ucezuAmathuluzi adingekayo:
Umgodi womlilo3
3
Cool it in metal
Cool it in metal
Shovel the ash into a metal bucket with a lid and stand it on bare ground, at least 3 m from any building. Leave it at least 3 days: ash hides embers that stay hot for days.
Amathuluzi adingekayo:
Ifosholo
Ibhakede lensimbi elinesivalo
Amagilavu Omsebenzi Esikhumba4
4
Sieve it
Sieve it
With a dust mask and gloves on, sieve the cold ash through a coarse sieve into a second bucket. Throw back any black bits for the next fire.
Amathuluzi adingekayo:
Isihlungo esibanzi
Ibhakede lensimbi
Imaski Yothuli
Amagilavu Omsebenzi Esikhumba5
5
Weigh the ash
Weigh the ash
Weigh the sieved ash and divide by the wood's weight: that is your yield. Note the species.
Amathuluzi adingekayo:
Isikali6
6
Keep it dry
Keep it dry
Store it in the lidded metal bucket in a dry place. Damp ash cakes, and rain washes the potassium out of it.
Amathuluzi adingekayo:
Ibhakede lensimbi elinesivaloIzinto
4- Isibambeli
- 1 ucezuIsibambeli
- 1 ucezuIsibambeli
- 1 ucezuIsibambeli
Amathuluzi Adingekayo
8- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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