Mix together a big pinch hops, a full teaspoon yellow honey, and ½ glass water. Bring all this thoroughly to a boil and reduce it slightly. Pour into a jar and, after it has cooled slightly, add 1½ glasses fine wheat flour. Mix and set in a warm place. The yeast will be ready in 2 days. If ½ spoon old yeast is added, it will be ready the next day.