My husband and I don’t care for rice and have been substituting orzo, a rice-shaped pasta. What is the difference between rice and orzo in terms of fat, sugar and carbohydrates? —C.M., Muskegon, MichiganBecause of orzo’s similar shape and mild flavor, it can be substituted for rice in many recipes. Nutritionally speaking, the two are similar as well. Ounce for ounce, rice and orzo contain similar amounts of fat, sugar, carbohydrates and even sodium.