Then, in a blender (or food processor), add the slivered almonds, vinegar, almond milk, nutritional yeast, salt, garlic powder, and Italian seasoning. Start blending on low speed first, then slowly increase speed. You may need to stop and re-blend a few times to get the consistency you want, scraping down the sides using a spatula and re-blending. When ready, it should be mostly smooth with a little texture from the almonds.