noun
in-house roasting; shop roasting; home roasting
Refers to the practice of roasting coffee beans on the premises, whether by a shop, café, or individual. Often used in the context of specialty coffee.
このカフェは自家焙煎のコーヒーを提供しています。
This café serves in-house roasted coffee.
自家焙煎に興味があって
I'm interested in home roasting, so I bought a small roaster.