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1
Combine garlic and pine nuts in a mortar; grind to a paste using a pestle.
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2
Add basil in batches and gently bruise and fold into the paste, preserving vibrant colour.
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3
Fold in grated Parmigiano Reggiano and fine sea salt.
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4
Slowly drizzle extra virgin olive oil while folding continuously to emulsify and create a loose sauce.
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5
Stir in water to achieve pourable consistency.
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6
Season with freshly ground black pepper; use immediately or store under a thin layer of olive oil for up to 3 days.