Toast the pine nuts in a dry skillet over medium heat for enhanced flavor. Adjust the amount of garlic to your preference; ramps can be quite pungent. For a smoother pesto, blanch the ramp leaves in boiling water for 30 seconds, then immediately transfer to an ice bath before processing. To preserve the bright green color, add a squeeze of lemon juice. Pesto can be frozen in ice cube trays for longer storage. Thaw as needed.