Blanch swiss chard leaves in boiling water for 30 seconds, just to remove chalky taste. Rinse under cold water and squeeze out water.
Put blanched swiss chard and garlic scapes in the bowl of a food processor and process until still slightly chunky.
Gradually pour olive oil in to feeder tube and continue processing until smooth.
Season to taste with salt and pepper.
Store in container; top off with olive oil before storing.