"This may sound more difficult than it is but it’s actually blissfully simple and can all be made well in advance...."
INGREDIENTS
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18 quails’ eggs
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2 oz (50 g) watercress, dried on kitchen paper
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½ teaspoon lemon juice
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freshly milled black pepper
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1 tablespoon tarragon leaves
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1 large egg
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½ teaspoon salt
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1 small clove garlic, peeled
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1 level teaspoon mustard powder
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4 fl oz (120 ml) groundnut oil
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1 fl oz (25 ml) olive oil
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1 teaspoon white wine vinegar
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4 oz (110 g) fresh watercress
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2 oz (50 g) Rocket leaves
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a few chives, finely snipped