Question: is aged cheddar lactose free?
Answer: The longer a cheese is aged, the more lactose is broken down by the bacteria in it ( 5 ). This means that aged, hard cheeses are often very low in lactose. For example, 3.5 ounces (100 grams) of cheddar cheese contain only trace amounts of it (6). Cheeses that are low in lactose include Parmesan, Swiss and cheddar.