The lake whitefish is a species of freshwater whitefish from North America that you will be preparing with roasted vegetables. We featured it in October along with sweet potato hash and tomato relish. Whitefish are native to Canada and parts of the northern United States. All of the Great Lakes are said to have populations of whitefish. It is primarily a commercial fish, but sport fishermen also fish for them. We used whitefish because it is sourced locally from Lake Superior and is naturally sweet and mild in flavor. The lemon and dill butter sauce pairs great with the roasted vegetables and light, flaky-fleshed fish.