In a saucepan add the asparagus stems and cover with water.
Add the salt and baking soda (to help with bitterness).
Bring to a boil and cook for a minute until just tender.
Drain and add to a blender or food processor along with the rest of the ingredients and blend until completely combined.
Transfer to a jar and refrigerate until ready to use.
Serve over hot pasta or a grain bowl.
