Step 1

Place chopped parsley, garlic, zest, lemon juice, olive oil, salt and pepper in a small  bowl. Give a stir. Taste. Add more lemon juice if you like. (You want this salty and lemony.) If you want a looser consistency add a little more oil. Add a pinch of chili flakes for heat.

Step 2

Place unchopped parsley, garlic and zest in a food processor and pulse until chopped. Add oil, salt & pepper and lemon juice. Pulse again, until uniformly combined but not too smooth. Taste and adjust salt and lemon juice. Add chili flakes for a touch of heat if you like. Add more oil for a looser consistency.