Bouillabaisse with rouille

1.Blanch tomatoes in a large saucepan of boiling water until skins split (30 seconds), refresh, peel, remove seeds (discard), coarsely chop flesh and set aside.

2.Heat half the olive oil in a large saucepan over medium heat, add onion, garlic and herbs, and sauté until onion softens (5-7 minutes). Increase heat to high, add shells and saffron and stir occasionally until pink (5-7 minutes). Add tomato and 1 litre water and simmer gently until infused (25-30 minutes). Strain through a fine sieve into a clean saucepan, pressing on solids to extract liquid (discard solids), add Pernod, season to taste and keep warm.

3.Meanwhile, for rouille, process yolk, garlic, mustard and tomato paste in a food processor until well combined. With motor running, add oil in a thin steady stream until incorporated and rouille is thick. Season to taste, set aside until required. Makes about 250ml.

4.Preheat a char-grill over high heat. Drizzle bread with remaining olive oil, season to taste and grill, turning once, until golden (1-2 minutes each side). Rub with the cut-side of garlic, set aside and keep warm.

5.Return stock to a low simmer and add trout, scallops, prawn and bug meat, and stir occasionally until just cooked through (1-2 minutes). Season to taste and serve hot scattered with parsley, with a dollop of rouille and grilled sourdough.