Start the water for the pasta; add additional salt to the water.
Heat oil in skillet over medium heat, add the chopped white bulbs and any pink stems to the oil. Sprinkle half of the salt over the ramps. Sauté for about 5 minutes or until just turning golden in color.
Add the half and half to the skillet as well as the remaining salt and pepper. Let it come to a simmer.
Once pasta water is boiling, add pasta and stir. Cook until al dente.
Meanwhile, while pasta is cooking and once the half and half mixture is simmering, add the chopped, green ramp leaves to the skillet. Stir frequently for about 3-4 minutes.
Add cornstarch to 3 Tbsp of cold water and mix well. Add cornstarch mixture to the skillet and stir constantly until desired consistency.
Drain pasta, saving about 1 cup of liquid.
Add the ramp/half and half mixture to the pasta. Add reserved pasta water as needed to reach desired consistency. Should be a smooth, creamy sauce.