Qiu continues to use wood fires to toast the seeds because they are "gentler" and produce less smoke than charcoal fires, but generate plenty of heat.
至於堅持使用木柴的理由為，柴火的火質「柔軟」，燃燒時產生的煙比木炭少，卻能釋放滲透力強的遠紅外線，木材的芬多精更能增添香氣。「就像人『不怕硬拳怕軟拳』，瓦斯火是『硬』去燒的，成品就是沒那麼好。」