Share 'Perfectly Duck-y Smashed Potatoes'

I was making duck confit last weekend using Daniel Bouloud's recipe and I wanted to make smashed potatoes to go with it because I was cooking for a crowd and the potato recipe accompanying the duck recipe (which itself takes at least 27 hours to prepare) was way too fussy. But - how to make the potatoes as special as the confit? And, at the same time, cater to one guest who was very intolerant o…