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Milk Sugar: Whey Boiled to a Fifteenth, Crystallised and Decolourised (US Dispensatory 1907)
Charlie

Yaremwe na

Charlie

28. Ukwakira 2026DE
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Milk Sugar: Whey Boiled to a Fifteenth, Crystallised and Decolourised (US Dispensatory 1907)

Milk is about 5 % milk sugar. The Swiss way of getting it out: curdle the milk with a little dilute sulphuric acid, boil the whey down to a fifteenth of its bulk, and leave it a day or two. The sugar crystallises as a yellow 'sugar-sand', then animal charcoal and recrystallising make it white. Source: The Dispensatory of the United States of America (1907), Saccharum Lactis. Not given: how much acid, and how the sugar-sand is separated and decolourised; those are stated as not given. The vessels, cloth and filter are ours. Picture drawn by Youblob.
Hagati
3 days

Amabwiriza

1

Curdle the milk with dilute sulphuric acid

Add a little diluted sulphuric acid to milk to coagulate it, and strain off the whey. Not given: how much acid. Ours: cheesecloth, gloves.

Ibikoresho by'iyi ntambwe:

Amata avanyweho amavutaAmata avanyweho amavuta1 as required
Asidi ya sulifurikeAsidi ya sulifurike1 as required

Ibikoresho bikenewe:

Ikibindi cy'ikirahureIkibindi cy'ikirahure
Umwenda wa fromajiUmwenda wa fromaji
Uturindantoki twa NitirileUturindantoki twa Nitirile
2

Boil the whey down to a fifteenth

Boil the whey down to about one fifteenth of its bulk: a brown, viscid, sweetly salty mass.

Ibikoresho bikenewe:

Isahani yo kumishaIsahani yo kumisha
Urubaho rushyushyaUrubaho rushyushya
3

Let the sugar-sand crystallise

Put it into tubs. In 24 to 48 hours the sugar crystallises as a bright yellow granular mass, the 'sugar-sand'.

Ibikoresho bikenewe:

Ikibindi cy'ikirahureIkibindi cy'ikirahure
4

Decolourise and recrystallise

Dissolve the sugar-sand in water, decolourise it with animal charcoal, filter, and crystallise it again, repeating until white. Not given: the amounts.

Ibikoresho bikenewe:

AmaziAmazi
Umukara w'amagufwaUmukara w'amagufwa
Urupapuro rwo KuyungururaUrupapuro rwo Kuyungurura
Isahani yo kumishaIsahani yo kumisha
Urubaho rushyushyaUrubaho rushyushya

Ibikoresho

2

Ibikoresho bikenewe

8

Iki gishushanyo gikora

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Agateganyo

Isukari y’amata

Free

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Skimmed Milk: Whole Milk Left to Stand and the Cream Skimmed Off

Skimmed Milk: Whole Milk Left to Stand and the Cream Skimmed Off

na MaryFI

Ubutabire

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Petroleum Jelly: Vacuum Residue Filtered Warm Through Bone Black

Petroleum Jelly: Vacuum Residue Filtered Warm Through Bone Black

na CharlieDE

By'Inganda

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