When it comes to picking out your sides, mashed potatoes are always going to be the most obvious choice. As it turns out, they’re actually not too bad of an option, offering up plenty of nutrients like fiber, Vitamin C, Vitamin B6 and even calcium (if it’s prepared with milk). The only thing is that it’s another sodium-filled food, although that depends on how it’s prepared. Mashed potatoes are a fine choice as long as they’re not doctored up with huge amounts of salt, butter and/or gravy. Dobbins suggests sweet potatoes as an even healthier alternative.