Add the mint, cilantro, lemon juice, olive oil, honey, salt, black pepper, and red pepper flakes to the bowl of a food processor. Pulse until the herbs are finely chopped and the mixture is well combined. Add the additional lemon juice as needed.

Taste and adjust seasoning if needed. If the sauce is too tart, add more honey. If it needs more brightness, a bit of lemon zest works wonders.

Use immediately or store in an airtight container in the refrigerator for up to a week. For longer storage, freeze in an ice cube tray.