Close up of a blue human iris. Eye color is a polygenic phenotypic character determined by two distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.
A simple Caesar salad. A Caesar salad is a salad of romaine lettuce and croutons dressed with parmesan cheese, lemon juice, olive oil, egg, Worcestershire sauce, anchovies, garlic, and black pepper. It is often prepared tableside. 1 History.
1 For the nicest presentation of this salad, place the romaine in your serving bowl and arrange all the prepared veggies, meats, eggs, and grated cheese over the top.  For the dressing, place the avocado, Greek yogurt, water, white wine vinegar, garlic, and sea salt into a blender or food processor and blend until smooth.