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Birch sap carries little sugar, up to about 0.8 % in European birches, so for wine it is boiled with a lot of sugar, cooled and set going with yeast. An English recipe of 1758 boils each gallon of sap with two and a half pounds of sugar, works it with yeast for two or three days, then barrels it with brandy and raisins in a sulphured cask. The soured, lightly fermented sap drinks of eastern Europe have their own entry.
Fully documentedAlcoholic drinks25 h – 3 days
Recipe
Amounts from a sourceRecipe 305, "To make birch wine", in Moxon's English Housewifry (1758 edition), given per gallon of sap; brandy and raisins per five gallons.
Total time across the recorded steps: 25 h – 3 days
Start
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What changes:Birch sap runs from a tapped tree into a bucket
Step 1 of 5
Tap the birch for sap
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Yeasts
In England birch was tapped in February or early March; in Scotland the sap harvest took place in March. Output: birch water.
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Not documented for this step.
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
Birch sap carries little sugar, up to about 0.8 % in European birches, so for wine it is boiled with a lot of sugar, cooled and set going with yeast. An English recipe of 1758 boils each gallon of sap with two and a half pounds of sugar, works it with yeast for two or three days, then barrels it with brandy and raisins in a sulphured cask. The soured, lightly fermented sap drinks of eastern Europe have their own entry. Made in 5 steps over 25 h – 3 days. The longest step, cool and work with yeast, takes 24 h – 3 days (Moxon E. 1758). Saccharomyces cerevisiae does most of the fermenting.
Fermented birch sap drinks in eastern Europe (berezovitsa) use the sap's own small amount of sugar and sour slowly. Birch sap wine is boiled with a great deal of added sugar and fermented with yeast, and older English recipes also add brandy and raisins.
Moses Cook, an English gardener, gave a recipe for birch sap wine in 1675. In 1754 a Swedish historian was served sparkling birch sap wine by the governor at Lappeenranta in Finland. Moxon printed two English recipes in 1758. The Swedish sparkling wine Grythyttan Björkvin is made from an old recipe of 1785, and urban taverns in Sweden sold birch sap wine in the late 18th and early 19th century.