This Meyer lemon sauce ONLY works with Meyer lemons because their peel is incredibly thin and the pith (bitter white between the flesh and peel) is light.
Wash the Meyer lemon and cut it in half.
Put both halves of the Meyer lemon, salt, and water into a high powered blender. Yes, peel, seeds, and all.
On medium to high speed, slowly add the olive oil in a thin stream.
Add water and blend a little more. If necessary add more water so that it is thick but still pourable.
Strain sauce through a fine mesh sieve.
This sauce can be made ahead of time and refrigerated in an air-tight container for 7 days or frozen for up to 3 months