To make absolutely harmless coffee which yet has no loss of flavor, it is to be boiled in a bag of unbleached cheese-cloth or something equally porous.

In the coffee-pot of his invention, the rounds of cotton are slipped between two cylinders of tin, and the boiling water is poured through once or twice, on the same principle as French filtered coffee.

The cloths must be rinsed in hot and then cold water daily and carefully dried; and none are to be used longer than one week, as at the end of that time, even with careful washing, the fibre is saturated with the harmful principle.

The same proportions of coffee as those given below are used, and the pot must stand in a hot place while the water filters through.
For a quart of coffee allow four heaping tablespoonfuls of coffee when ground.

Scald the coffee-pot; mix the ground coffee with a little cold water and two or three egg-shells, which can be dried and kept for this purpose.