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Rory O'Connell's mackerel tostadas

Watch How to Cook Well with Rory O'Connell Mondays at 7.30pm on RTÉ One.
Watch How to Cook Well with Rory O'Connell Mondays at 7.30pm on RTÉ One.

These tostadas are delicious combining the flavour of mackerel and chipotle, lightened with a vibrant, citrusy tomato salsa and finished with a slice of creamy avocado and a sprinkling of deep-fried shallots.

Ingredients

Serves 4

  • 4 x 10cm corn tortillas
  • 4 mackerel fillets
  • Seasoned flour ( plain flour seasoned with salt and pepper)
  • 4 tablespoons fresh tomato salsa (see recipe)
  • 4 cos lettuce leaves, shredded
  • For the deep-fried shallots (optional)
  • 4 shallots, finely sliced
  • 100ml (3 1/2fl oz/scant 1/2 cup) olive oil or vegetable oil for frying

To Serve

  • 4 tablespoons chipotle mayonnaise (see recipe)
  • 1 avocado, peeled, stoned and sliced
  • Freshly squeezed lime juice (optional)
  • Coriander leaves.

Method

  1. To make the deep fried shallots, pour the olive oil into the frying-pan and heat until it is shimmering. Add the shallots and shallow fry them until they are crisp and golden.
  2. Remove with a slotted spoon and drain on kitchen paper to absorb the oil (you can keep the oil and re-use it for frying the tortillas until crisp and golden.
  3. Dip the mackerel fillets in a little seasoned flour and shake off the excess. Paint the skin side of the mackerel with a little olive oil and place skin side down on a hot grill or sauté pan.
  4. Allow to cook for 4-5 minutes until the skin is well coloured and beginning to blister.
  5. Turn and cook for 1 minute on the other side. Remove from the pan and keep warm in an oven heated to 120c.
  6. Spread each tostada generously with chipotle mayonnaise and top with a little shredded lettuce. Spoon over the tomato salsa followed by a fillet of the cooked mackerel and top with a slice of avocado.
  7. Squeeze over a little lime juice and if you like sprinkle with deep-fried shallots and a few coriander leaves.