In a food processor or blender, blend the cashews, almonds, nutritional yeast (if using), garlic, 11/4 teaspoons salt, truffle zest, lemon juice, 2 tablespoons water, and vinegar. Puree and scrape down the sides of the bowl as needed to get the mixture started. Puree again, scrape down again—and puree again! Try not to overwater the cheese early on. Rather, puree much longer than you think you need to, and scrape down in between. If the mixture is stubborn, then add another splash of water. When very smooth, taste. Add more salt or truffle zest as desired, as well as fresh herbs, if using. Puree the herbs briefly. If you want to add the probiotic powder for a more cultured taste, see the note below. Serve, refrigerate in portions for up to a don’t need to adjust seasonings and use the processor again, remove the blade. Open the probiotic capsules and sprinkle in the powder, then use a wooden spoon or spatula to stir it in (metal can affect the probiotic, which is why it’s important to remove the blade and use nonmetal utensils). Transfer the cheese to a nut milk bag or cheesecloth-lined strainer propped over a bowl. Cover and let sit at room temperature for 24–48 hours. After that time, transfer to the fridge for up to a week, or you can freeze some or all of the cheese for later.