Boil the water -either in batches or get a boiler (a 6-gallon one is good for doing 5 you get less splashing). Put the nettle tips in a large tub (at least 6 and pour the boiling water over them. Lea infuse until cooled to around 35-36C (usu a couple of hours). Strain back into your boiler (or a multitude pots!). Add the lemon and orange juice, th and the cream of tartar. Heat gently and s the sugar has dissolved -do not boil -and transfer into a brewing vat. Leave to cool to about 20C (overnight is u best), then pitch the yeast.

Cover the vat loosely with muslin and leav stand in a warm place for about three day use a brewing heater set to 20C.) Carefully skim any scum off the surface, t the beer into beer bottles, taking care not disturb the sediment. Leave to condition f week or so, then serve cold.