Yes! I could be wrong but I'm guessing the Incans were not out there making aji verde with their Vitamixes. To make without a blender, mince everything very finely, or grate it, and stir it up a in a small bowl. You could also use a mortar and pestle to grind up the herbs, garlic, etc. before mixing in with the rest of the ingredients. If you have a blender, though, I'd recommend this method because I love the smooth and creamy barely-flecked texture of it.