There are many excellent kettlestyle home smokers on the market, all of which must be used outdoors. It is also possible to use a wok lined with aluminum foil to smoke foods in a well ventilated kitchen. Soak the hardwood chunks for at least 3 hours and place them in the bottom of the foil lined wok. Place a round metal rack above the chunks. Heat the wok over medium heat, partially covered, until the wood starts to smoke. Place the food to be smoked on the rack and again partially cover the wok. Keep the heat just high enough to maintain the smoldering of the chips. Use a thermometer with a cable and a probe to monitor the temperature at the rack level and adjust the heat as necessary.