This root vegetable mash is certainly not one of the healthiest, and you can of course replace some of the butter with the cooking water from the root vegetables. That said, this version really does have something going for it. When we make it with this much butter, we serve it as a side to a leg of lamb, a roast beef or similar, where there are other sides on the table too. So nobody gets a huge portion, and then a little extra butter is perfectly fine, isn’t it?
