How hot are the chillies?
It varies widely. Anchos and pasillas are mild; chipotle morita and árbol are considerably hotter. Heat level is given on each product page.
What is masa harina and can I use normal cornflour?
Masa harina is maize treated with lime (nixtamalised) then dried and ground. Cornflour and polenta are not substitutes — only masa forms a dough that holds together as a tortilla.
How do I prepare dried chillies?
Toast in a dry pan for a few seconds each side until fragrant, cover with hot water for 20 minutes, then blend. Do not let them scorch, or the sauce turns bitter.
How long do dried chillies keep?
A year or more in a sealed container away from light. They stay usable longer but lose aroma; they should be leathery rather than brittle.
