The flatbread is not a side here. Half the dish is bread in the sauce.
- Dough: flour, salt, about 120 ml water. Knead a minute, rest ten, divide and press thin.
- Dry pan, 60 to 90 seconds a side until blistered. Out, and brushed immediately with half the oil mixed with half the garlic granules. While hot, so it soaks in rather than sitting on top.
- Same pan: remaining oil, remaining garlic, herbs, thirty seconds.
- Keep a spoonful of the brine from the tins and add it with the vinegar and 80 ml water. Two minutes at a simmer.
- Drained mussels in for one minute. No longer. They toughen quickly.
- Pepper, and the bread torn into it.
The brine is the only thing in the tin carrying any sea flavour, so tasting it first and adding it deliberately is worth doing.
Serves 2.