IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Potato Starch: Grated, Washed Through a Sieve and Settled
Grate potatoes, wash the pulp through a sieve, and the starch runs out with the water and settles as a white layer. Andrew Ure (1839) describes the works: rasping drums, hair sieves and three settling backs, with starch equal to 17–18 % of the potatoes. Work fast: Ure notes that the quicker it is made, the better the starch.
The picture: Huck's revolving sieve for separating starch from potato pulp, engraved in Les merveilles de l'industrie (1873).
Olùbẹ̀rẹ̀
A day with drying
Ìlànà
1
1
Wash and grate
Wash and grate
Scrub the potatoes clean in water and grate them to a fine pulp, wetting the grater now and then so it does not clog.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀dùnkún5 kg
Omi2 lítàÀwọn irinṣẹ́ tí a nílò:
Òǹwọ̀n ìdọ́gba
Ohun èlò ìhọ
Bàkẹ́ẹ̀tì2
2
Wash the pulp through a sieve
Wash the pulp through a sieve
Set a fine sieve over a vat. Pour water over the pulp and knead it by hand until only fibre is left on the sieve. The water runs through milky with starch.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi15 lítàÀwọn irinṣẹ́ tí a nílò:
Ohun Ìsẹ́ Kékeré
Ọpọ́n igi ńlá3
3
Settle three times
Settle three times
Let the milky water settle. Pour the liquor off into a second bucket, then a third; Ure: the finest starch collects in the last. Stir the white layers up in clean water and settle again until the water stands clear.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi10 lítàÀwọn irinṣẹ́ tí a nílò:
Ọpọ́n igi ńláBàkẹ́ẹ̀tì4
4
Dry it
Dry it
Lift the wet starch out, spread it thin on muslin in a warm, airy place and let it dry. Crumble it to a powder and keep it in a jar. To keep it wet instead, store it under a little water and change the water often.
Àwọn irinṣẹ́ tí a nílò:
Aṣọ muslin
Ìgò Gílásì5
5
Potatoes to starch
Potatoes to starch
Ń ṣí ìwé Jupyter…
6
6
Limits
Limits
The method and yield are Ure's, from works with rasping drums; the hand grater, buckets and quantities are ours.
Àwọn irinṣẹ́ tó nílò
7- Àyè
- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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