Bring 3/4 litre of water to the boil. Put tea in a well preheated pot and pour boiling water over it. Leave to infuse for about 5 minutes. In the meantime, wash 1 lemon hot and rub dry with kitchen paper.
Cut the lemon into wafer-thin slices. Squeeze the rest of the lemons. Sieve the tea. Stir in lemon juice and caraway brandy. Pour the tea punch into four tall preheated glasses. Put lemon slices into them and serve with brown candy.