Spread the yeast on a piece of bread. Boil the water, honey and sugar. Stand in an earthenware pot. Skim off anyscum. Add lemon juice, cloves and ginger. Leave to cool. When just warm, float the bread and yeast on the top. Cover with a clean cloth. Leave for about 6-8 days. Strain and bottle. Corks should be loose to start with. Leave for at least 5-6 months.