Prepare a very hot fire, or get griddle or large pan very hot. Very lightly oil the ramps, season with a pinch of salt, then cook--it's ok if you get a little char on them, it will taste great with the sweet ness of the sauce.
Young ramps are the best for this, and will cook very fast. If your bulbs are larger, you may want to dunk them in boiling water first, or cook them on a hot spot of the grill for longer than you cook the leaves.
Grilled ramps are amazing, but you don't want to bite into un-cooked ramp bulb. Put the cooked leaves on a serving plate, drizzle with the sauce and a few cracks of pepper and serve. Add a steak, piece of chicken or fish and it's a meal.