Ooh. I made this years ago - it worked very well, though I do remember getting very strange looks as I wandered through a little wood with an empty demijohn and a drill...
But I don't have the recipe any more. I know it was dead easy, and very nice, but that's little help to you. I'll see if I can find one that rings bells for me!
hi becks77 hubby found this one in an old brewing book we have.
birch sap 4.5litres or 1 gallon.
lemons 2.
sweet oranges 1.
grape concentrate(white) 280mls or 1/2 pin
sugar 1.5 kilos or 3 lbs.
seville orange 1
yeast and nutrients.
obtain a wooden beer or wine barrel tap,or a piece of glass or plastic tubing,fixed in a bung or cork.with a brace and bit of the same diameter as tap or bung bore a hole into te trunk of the tree to just beyond the inside of the bark,and insert the tube,which should incline slightly dowmwards to allow the sap to run easily.in march when the sap is rising,it should be possible to draw off a gallon or so of liquor in two or three days.plug the hole afterwards.
peel the oranges and lemons (discard the white pith) and boil the peel in the sap for 20 minutes.add enough water to restore the volume of one gallon,then pour into a bucket containing the sugar and concentrate.stir until the sugar is dissolved; when the liquor has cooled to 21oc add the fruit juice and yeast.cover the bucket with a thick cloth and keep in a warm place until fermentation as quietened.then strain into a fermentation jarand fir airlock.leave for about six months,ten siphon off and bottle.use strong bottles,tie down the corks,and store the bottles on their sides for at least another six months before sampling.hope this will be of help to you