In a small pot, bring 4 cups water to a boil. Remove from heat, add cashews and allow to soak for about 30 minutes. In a skillet, warm 1 teaspoon oil over low heat. Add the garlic and cook for 2-3 minutes, until fragrant. Remove from heat and set aside. Strain excess water from cashews, rinse, then add them to the bowl of a high speed blender along with cooked garlic and remaining ingredients. Blend on high until smooth, scraping down the sides as needed. Add more water as needed to thin.