Baked salmon in a lemon sauce with roasted potatoes

Salmon, potatoes (potatoes [potatoes, canola oil, olive oil, disodium dihydrogen pyrophosphate (to promote color retention), dextrose], blended oil [canola oil, extra virgin olive oil], kosher salt, black pepper, paprika smoked), lemon sauce (chicken stock [water, chicken, base (cooked chicken meat, salt, chicken fat, maltodextrin, evaporated cane syrup, yeast extract, dried whey, natural flavors, corn oil, soybean oil, extractives of turmeric and annatto, carrot juice powder)], butter [pasteurized cream, salt], lemon juice, flour [unbleached wheat flour, malted barley flour, niacin, reduced iron, thiamin mononitrate, riboflavin, folic acid], white pepper).