[petitfour]

We never saw white salsa outside of the Southeast USA either. In Tucson we had a green purée looking salsa at one restaurant. Husband liked it, but I thought it was rather tasteless. (La Parrilla Suizza)

[luvbach1]

The green purée may have been tomatillo, cilantro, and chile salsa which is also common in San Diego, especially in taco shops and sometimes restaurants. But it should not have been tasteless. I thank fellow posters for forbearing my digression.