Optional: For some extra spice, add chipotle tea (made by boiling dried chipotles, letting them steep, removing the chilies and using the "tea"). You may also choose to soak the cashews in this tea.
Place all ingredients in a high powered blender or food processor and blend on high, stopping to scrape down the sides if needed. Blend until the cashew cream is smooth and silky with no chunks. It will firm up a little in the fridge, and keeps well.