In a mini food processor, use the “grind” setting to reduce the raw unsalted cashews to a fine / sand-like texture, then use the normal setting to get a paste-like, spreadable texture.
Begin to add the coconut milk a tablespoon at a time, scraping the sides down when needed, and blend until you have a smooth paste. This will take several minutes. Once the mixture is smooth, add the rest of the coconut milk and the lemon juice, then blend to combine.
Add the seasonings and fresh herbs and blend until combined / smooth.