Soak the cashews overnight: Add the cashews to a bowl, cover with cool water, and leave to soak overnight, or for a minimum of 8 hours.*** Drain the soaked cashews and rinse with fresh water.
Add soaked and drained cashews to a food processor**** bowl with the water, pickle juice, lemon zest, and lemon juice and blend until the mixture comes together and is smooth as possible.
Add the nutritional yeast, garlic, miso, onion powder, salt, pepper, and olive oil, and pulse repeatedly until the mixture resembles ricotta cheese, scraping down the sides as you go. If you want a smoother texture, blend instead of pulse.
Taste, and adjust the flavors to your taste. Add 1 more tablespoon of pickle juice for tanginess, more salt for saltiness, the rest of the lemon zest for more lemon flavor, or more olive oil for more richness.
You can use now, but I like to store it in the fridge for 1 to 2 hours to further thicken. Store leftovers in an airtight container in the fridge for up to one week.