Add extra char to your tortillas by toasting them over a stove flame for a few seconds each side, then microwave them covered with a tea towel for 10 seconds to keep them nice and soft.
"Guajillo chillies give the smooth chilli sauce here just the right amount of heat," says Curtis Stone. "The sauce is married with crisp tortilla chips for this popular Mexican breakfast dish."
This sashimi-style kingfish tostada makes an excellent snack on a summer's day. If you don't feel like frying tortillas, serve the ceviche and avocado separately with corn chips.