Prep Time 20 minutes mins
Cook Time 10 minutes mins
Total Time 30 minutes mins
Squeeze greens well: Water is the enemy of a creamy emulsion. Squeeze in a clean dish towel until no more liquid comes out. Don't skip the egg yolk — it's the difference between a glossy sauce and a matte one. Reserve extra pasta water: The starch binds the sauce; you may need more than 1/2 cup. Pangrattato isn't optional — it adds crunch and visual contrast. Store the green sauce in an airtight jar in the fridge for 3-4 days. Do not freeze if it contains egg yolk; texture will suffer.